c-- ccc ccm cco ccs cct ccz cmc cmm cmo cms cmt cmy co- coc com coo cos cot coy coz csc csm cso css cst csy csz ctc ctm cto cts ctt cty ctz cyc cym cyo cys cyt cz- czc czm czo czt m-o mc- mcc mcm mco mcs mct mcz mmc mmm mmo mms mmt mmz moc mom moo mos mot moy moz msc msm mso mss mst msy mtc mtm mto mts mtt my- myc mym myo mys myt mzm mzt oc- occ ocm oco ocs oct ocz om- omc omm omo oms omt omy omz oo- ooc oom ooo oos oot os- osc osm oso oss ost ot- otc otm oto ots ott otz oyo oys ozm ozo ozs ozt ozz scc scm sco scs sct smc smm smo sms smt smy smz soc som soo sos sot soy soz ss- ssc ssm sso sss sst ssz stc stm sto sts stt sty stz sy- syc sym sys syt tcc tcm tco tcs tct tmc tmm tmo tms tmt tmy tmz to- toc tom too tos tot toy toz tsc tsm tso tss tst tsy ttc ttm tto tts ttt tty tyc tym tyo tys tyt tzs ycc yco ycs ycy ymc ymm ymo yms ymt yoc yom yoo yos yot yoy ysc ysm yso yss yst ysy ysz ytc ytm yto yts ytt yyc yys yyt yyy yyz yzy zco zcs zmc zmm zms zmt zo- zoc zom zoo zos zot zsm zst zsz ztm zym zzs zzt zzy zzz