c-- ccc ccm cco ccw cmc cmm cmo cmw cmy co- coc com coo cow coy cw- cwc cwm cwo cyc cym cyo cyw m-o m-w mc- mcc mcm mco mcw mmc mmm mmo mmw moc mom moo mow moy mwc mwm mwo mww my- myc mym myo myw oc- occ ocm oco ocw om- omc omm omo omw omy oo- ooc oom ooo oow owc owm owo oww oyo wcc wcm wco wcw wm- wmc wmm wmo woc wom woo wow woy wwc wwm wwo www wy- wyc wyo ycc yco ycw ycy ymc ymm ymo yoc yom yoo yow yoy ywc yyc yyy