c-- ccc ccn cco cct ccv cn- cnc cnn cno cnt cnv co- coc con coo cot cov ctc ctn cto ctt ctv cvc cvn cvo cvt cvv ncc ncn nco nct ncv nnc nnn nno nnt nnv no- noc non noo not nov ntc ntn nto ntt ntv nvc nvn nvt nvv oc- occ ocn oco oct ocv on- onc onn ono ont oo- ooc oon ooo oot oov ot- otc otn oto ott otv ov- ovc ovo ovv tcc tcn tco tct tcv tnc tnn tno tnt to- toc ton too tot tov ttc ttn tto ttt ttv tvc tvn tvo tvt vcc vcn vco vct vn- vno vnv voc von voo vot vov vtc vto vtt vtv vvc vvo vvt vvv