c-- ccc cch cco ccu ccv ch- chc chh cho chu chv co- coc coh coo cou cov cuc cuh cuo cuu cuv cvc cvh cvo cvu cvv hcc hch hco hcv hhc hhh hho hhu hhv hoc hoh hoo hou hov huc huh huo huu huv hv- hvc hvo hvv oc- occ och oco ocu ocv ohc ohh oho ohu oo- ooc ooh ooo oov ou- ouc ouh ouo ov- ovc ovh ovo ovv ucc uch uco ucu ucv uhc uhh uho uhu uhv uoc uoo uuc uuu uvc uvo uvu uvv vcc vch vco vcu vh- vhc vho voc voh voo vou vov vuv vvc vvo vvv