k-t kkk kkm kks kkt kmk kmm kmo kms kmt kok kom koo kos kot ksk ksm kso kss kst ktk ktm kto kts ktt m-o mkk mkm mko mks mkt mmk mmm mmo mms mmt mok mom moo mos mot msk msm mso mss mst mtk mtm mto mts mtt okk oko oks om- omm omo oms omt oo- ook oom ooo oos oot os- osk osm oso oss ost ot- otk otm oto ots ott sk- skk skm sko sks skt smk smm smo sms smt sok som soo sos sot ss- ssk ssm sso sss sst stk stm sto sts stt tkk tkm tko tks tkt tmk tmm tmo tms tmt to- tok tom too tos tot tsk tsm tso tss tst ttk ttm tto tts ttt