m-o m-v mmm mmo mms mmt mmv mom moo mos mot mov msm mso mss mst msv mtm mto mts mtt mtv mvm mvo mvs mvt mvv om- omm omo oms omt omv oo- oom ooo oos oot oov os- osm oso oss ost osv ot- otm oto ots ott otv ov- ovo ovs ovv smm smo sms smt smv som soo sos sot sov ss- ssm sso sss sst ssv stm sto sts stt stv svm svo svs svt svv tmm tmo tms tmt tmv to- tom too tos tot tov tsm tso tss tst tsv ttm tto tts ttt ttv tvm tvo tvs tvt vm- vmm vmo vmt vom voo vos vot vov vsm vso vss vst vsv vtm vto vts vtt vtv vvm vvo vvs vvt vvv