a-a a-c a-t aaa aac aan aao aar aat aax aay ac- aca acc acn aco acr act acx acy an- ana anc ann ano anr ant anx any aoa aoc aon aoo aor aot aox ar- ara arc arn aro arr art arx ary at- ata atc atn ato atr att atx ax- axa axn axo axr axt axx ay- aya ayc ayn ayo ayr ayt ayx c-- caa cac can cao car cat cax cay cca ccc ccn cco ccr cct ccx cn- cna cnc cnn cno cnr cnt cnx cny co- coa coc con coo cor cot cox coy cra crc crn cro crr crt crx cry cta ctc ctn cto ctr ctt ctx cty cxc cxo cxr cxt cxx cya cyc cyn cyo cyr cyt naa nac nan nao nar nat nax nay nca ncc ncn nco ncr nct ncx nna nnc nnn nno nnt no- noa noc non noo nor not nox noy nra nrc nrn nro nrr nrt nrx nry nta ntc ntn nto ntr ntt ntx nxc nxt nya nyc nyn nyo nyt nyx nyy oaa oac oan oao oar oat oax oc- oca occ ocn oco ocr oct ocx on- ona onc onn ono onr ont onx ony oo- ooa ooc oon ooo oor oot oox or- ora orc orn oro orr ort orx ory ot- ota otc otn oto otr ott ox- oxa oxc oxn oxo oxt oxx oxy oya oyo ra- raa rac ran rao rar rat rax ray rca rcc rcn rco rcr rct rcx rna rnc rnn rno rnr rnt rny roa roc ron roo ror rot rox roy rra rrc rrn rrr rrt rta rtc rtn rto rtr rtt rtx rty rxr ry- rya ryc ryn ryo ryr ryy t-x taa tac tan tao tar tat tax tay tca tcc tcn tco tcr tct tcx tna tnc tnn tno tnr tnt tnx to- toa toc ton too tor tot tox toy tra trc trn tro trr trt trx try tta ttc ttn tto ttr ttt ttx tty txn txt tya tyc tyn tyo tyr tyt xaa xac xan xar xat xcr xcx xna xnc xno xoa xoc xon xoo xor xot xox xrc xrt xrx xry xtc xtr xtx xty xxo xxx xxy xyr xyy yaa yac yan yao yar yat yax yay yca ycc yco ycy yna ynn yny yoc yon yoo yor yot yox yoy yra yrc yrn yro yrt yta ytc ytn yto ytr ytt yxa yxy yyc yyt yyy