The precomposed character you chose is not available (yet), neither in Unicode 2.0 nor in its TITUS extension.

List of Latin-based precomposed UNICODE characters with description of their elements.

TITUS extensions are in green.
LATIN SMALL LETTER X WITH GRAVE(x̀)
E75B592270078+0300120+768
LATIN SMALL LETTER X WITH ACUTE(x́)
E75C592280078+0301120+769
LATIN SMALL LETTER X WITH TILDE(x̃)
E75D592290078+0303120+771
LATIN SMALL LETTER X WITH MACRON(x̄)
E75E592300078+0304120+772
LATIN SMALL LETTER X WITH BREVE(x̆)
E75F592310078+0306120+774
LATIN SMALL LETTER X WITH BREVE AND ACUTE(x̆́)
E760592320078+0306+0301120+774+769
ẋLATIN SMALL LETTER X WITH DOT ABOVE(ẋ)
1E8B78190078+0307120+775
ẍLATIN SMALL LETTER X WITH DIAERESIS(ẍ)
1E8D78210078+0308120+776
LATIN SMALL LETTER X WITH RING ABOVE(x̊)
E761592330078+030A120+778
LATIN SMALL LETTER X WITH CARON(x̌)
E762592340078+030C120+780
LATIN SMALL LETTER X WITH CARON AND RING ABOVE RIGHT(x̌)
E763592350078+030C+F0B4120+780+61620
LATIN SMALL LETTER X WITH INVERTED BREVE(x̑)
E764592360078+0311120+785
LATIN SMALL LETTER X WITH COMMA ABOVE RIGHT(x̕)
E765592370078+0315120+789
LATIN SMALL LETTER X WITH PALATALIZED HOOK(x̡)
E766592380078+0321120+801
LATIN SMALL LETTER X WITH DOT BELOW(x̣)
E767592390078+0323120+803
LATIN SMALL LETTER X WITH RING BELOW(x̥)
E768592400078+0325120+805
LATIN SMALL LETTER X WITH BREVE BELOW(x̮)
EDAB608430078+032E120+814
LATIN SMALL LETTER X WITH BREVE BELOW AND CAUCASIAN MODIFIER LETTER LABIALIZATION MARKER(x̮)
EDAC608440078+032E+EFB3120+814+61363
LATIN SMALL LETTER X WITH MODIFIER LETTER SMALL V SUPERSCRIPT(xv)
E769592410078++0076120+118
LATIN SMALL LETTER X WITH CAUCASIAN MODIFIER LETTER PHARYNGEAL MARKER(x)
EDAD608450078+EFB1120+61361
LATIN SMALL LETTER X WITH CAUCASIAN MODIFIER LETTER PHARYNGEAL MARKER NAD LABIALIZATION MARKER(x)
EDAE608460078+EFB1+EFB3120+61361+61363
LATIN SMALL LETTER X WITH CAUCASIAN MODIFIER LETTER PALATALIZATION MARKER(x)
EDAF608470078+EFB2120+61362
LATIN SMALL LETTER X WITH CAUCASIAN MODIFIER LETTER PALATALIZATION MARKER AND LABIALIZATION MARKER(x)
EDB0608480078+EFB2+EFB3120+61362+61363
LATIN SMALL LETTER X WITH CAUCASIAN MODIFIER LETTER PALATALIZATION MARKER AND INTENSIFIED MARKER(x)
EDB1608490078+EFB2+EFB4120+61362+61364
LATIN SMALL LETTER X WITH CAUCASIAN MODIFIER LETTER PALATALIZATION MARKER AND INTENSIFIED MARKER AND LABIALIZATION MARKER(x)
EDB2608500078+EFB2+EFB4+EFB3120+61362+61364+61363
LATIN SMALL LETTER X WITH CAUCASIAN MODIFIER LETTER LABIALIZATION MARKER(x)
EDB3608510078+EFB3120+61363
LATIN SMALL LETTER X WITH CAUCASIAN MODIFIER LETTER INTENSIFIED MARKER(x)
EDB4608520078+EFB4120+61364
LATIN SMALL LETTER X WITH TURNED COMMA ABOVE RIGHT(x)
EDB5608530078+F0A1120+61601
LATIN SMALL LETTER X WITH TURNED COMMA ABOVE RIGHT AND CAUCASIAN MODIFIER LETTER PALATALIZATION MARKER(x)
EDB6608540078+F0A1+EFB2120+61601+61362
LATIN SMALL LETTER X WITH TURNED COMMA ABOVE RIGHT AND CAUCASIAN MODIFIER LETTER LABIALIZATION MARKER(x)
EDB7608550078+F0A1+EFB3120+61601+61363
LATIN SMALL LETTER X WITH TURNED COMMA ABOVE RIGHT AND CAUCASIAN MODIFIER LETTER INTENSIFIED MARKER(x)
EDB8608560078+F0A1+EFB4120+61601+61364
LATIN SMALL LETTER X WITH TURNED COMMA ABOVE LEFT(x)
EDB9608570078+F0A5120+61605
LATIN SMALL LETTER X WITH TURNED COMMA ABOVE LEFT AND CAUCASIAN MODIFIER LETTER PALATALIZATION MARKER(x)
EDBA608580078+F0A5+EFB2120+61605+61362
LATIN SMALL LETTER X WITH TURNED COMMA ABOVE LEFT AND CAUCASIAN MODIFIER LETTER LABIALIZATION MARKER(x)
EDBB608590078+F0A5+EFB3120+61605+61363
LATIN SMALL LETTER X WITH RIGHT HALF RING ABOVE RIGHT(x)
E76A592420078+F0B3120+61619
LATIN SMALL LETTER X WITH RING ABOVE RIGHT(x)
E76B592430078+F0B4120+61620
LATIN SMALL LETTER X WITH ACUTE ABOVE RIGHT(x)
E76C592440078+F0D0120+61648


 The precomposed character you chose is not available (yet), neither in Unicode 2.0 nor in its TITUS extension.