a-a a-c a-t aaa aac aao aap aar aat aay ac- aca acc aco acp acr act acy aoa aoc aoo aop aor aot ap- apa apc apo app apr apt apy ar- ara arc aro arp arr art ary at- ata atc ato atp atr att ay- aya ayc ayo ayp ayr ayt c-- caa cac cao cap car cat cay cca ccc cco ccp ccr cct co- coa coc coo cop cor cot coy cpa cpc cpo cpp cpr cpt cra crc cro crp crr crt cry cta ctc cto ctp ctr ctt cty cya cyc cyo cyp cyr cyt oaa oac oao oap oar oat oc- oca occ oco ocp ocr oct oo- ooa ooc ooo oop oor oot op- opa opc opo opp opr opt opy or- ora orc oro orp orr ort ory ot- ota otc oto otp otr ott oya oyo p-p paa pac pao pap par pat pay pca pcc pco pcp pcr pct poa poc poo pop por pot poy ppa ppc ppo ppp ppr ppt pra prc pro prp prr prt pry pt- pta ptc pto ptp ptr ptt pty py- pya pyc pyo pyr pyt ra- raa rac rao rap rar rat ray rca rcc rco rcp rcr rct roa roc roo rop ror rot roy rpa rpc rpo rpp rpr rpt rra rrc rrp rrr rrt rta rtc rto rtp rtr rtt rty ry- rya ryc ryo ryr ryy taa tac tao tap tar tat tay tca tcc tco tcp tcr tct to- toa toc too top tor tot toy tpa tpc tpo tpp tpr tpt tra trc tro trp trr trt try tta ttc tto ttp ttr ttt tty tya tyc tyo typ tyr tyt yaa yac yao yap yar yat yay yca ycc yco ycp ycy yoc yoo yop yor yot yoy ypa ypo yra yrc yro yrp yrt yta ytc yto ytp ytr ytt yyc yyt yyy