I. II. III. IV. V. VI. VII. X AX AB ABC ABCD ABCDE ABCDEF *a*X A*b* AB*c* ABC*d* ABCD*e* ABCDE*f* *a*B A*b*C AB*c*D ABC*d*E ABCD*e*F *ab* A*bc* AB*cd* ABC*de* ABCD*ef* *a*BC A*b*CD AB*c*DE ABC*d*EF *a*B*c* A*b*C*d* AB*c*D*e* ABC*d*E*f* *ab*C A*bc*D AB*cd*E ABC*de*F *abc* Ab*cd* AB*cde* ABC*def* *a*BCD A*b*CDE AB*c*DEF *a*BC*d* A*b*CD*e* AB*c*DE*f* *a*B*c*D A*b*C*d*E AB*c*D*e*F *a*B*cd* A*b*C*de* AB*c*D*ef* *ab*CD A*bc*DE AB*cd*EF *ab*C*d* A*bc*D*e* AB*cd*E*f* *abc*D A*bcd*E AB*cde*F *abcd* A*bcde* AB*cdef* *a*BCDE A*b*CDEF *a*BCD*e* A*b*CDE*f* *a*BC*d*E A*b*CD*e*F *a*BC*de* A*b*CD*ef* *a*B*c*DE A*b*C*d*EF *a*B*c*D*e* A*b*C*d*E*f* *a*B*cd*E A*b*C*de*F *a*B*cde* A*b*C*def* *ab*CDE A*bc*DEF *ab*CD*e* A*bc*DE*f* *ab*C*d*E A*bc*D*e*F *ab*Cd*e* A*bc*D*ef* *abc*DE A*bcd*EF *abc*D*e* A*bcd*E*f* *abcd*E A*bcde*F *abcde* A*bcdef* *a*BCDEF *a*BCDE*f* *a*BCD*e*F *a*BCD*ef* *a*BC*d*EF *a*BC*d*E*f* *a*BC*de*F *a*BC*def* *a*B*c*DEF *a*B*c*DE*f* *a*B*c*D*e*F *a*B*c*D*ef* *a*B*cd*EF *a*B*cd*E*f* *a*B*cde*F