c-- ccc ccn cco ccr cct ccx cn- cnc cnn cno cnr cnt cnx cny co- coc con coo cor cot cox coy crc crn cro crr crt crx cry ctc ctn cto ctr ctt ctx cty cxc cxo cxr cxt cxx cyc cyn cyo cyr cyt ncc ncn nco ncr nct ncx nnc nnn nno nnt no- noc non noo nor not nox noy nrc nrn nro nrr nrt nrx nry ntc ntn nto ntr ntt ntx nxc nxt nyc nyn nyo nyt nyx nyy oc- occ ocn oco ocr oct ocx on- onc onn ono onr ont onx ony oo- ooc oon ooo oor oot oox or- orc orn oro orr ort orx ory ot- otc otn oto otr ott ox- oxc oxn oxo oxt oxx oxy oyo rcc rcn rco rcr rct rcx rnc rnn rno rnr rnt rny roc ron roo ror rot rox roy rrc rrn rrr rrt rtc rtn rto rtr rtt rtx rty rxr ry- ryc ryn ryo ryr ryy t-x tcc tcn tco tcr tct tcx tnc tnn tno tnr tnt tnx to- toc ton too tor tot tox toy trc trn tro trr trt trx try ttc ttn tto ttr ttt ttx tty txn txt tyc tyn tyo tyr tyt xcr xcx xnc xno xoc xon xoo xor xot xox xrc xrt xrx xry xtc xtr xtx xty xxo xxx xxy xyr xyy ycc yco ycy ynn yny yoc yon yoo yor yot yox yoy yrc yrn yro yrt ytc ytn yto ytr ytt yxy yyc yyt yyy