a-a a-c aaa aac aao aap aar aas aay ac- aca acc aco acp acr acs acy aoa aoc aoo aop aor aos ap- apa apc apo app apr aps apy ar- ara arc aro arp arr ars ary as- asa asc aso asp asr ass asy ay- aya ayc ayo ayp ayr ays c-- caa cac cao cap car cas cay cca ccc cco ccp ccr ccs co- coa coc coo cop cor cos coy cpa cpc cpo cpp cpr cps cra crc cro crp crr crs cry csa csc cso csp csr css csy cya cyc cyo cyp cyr cys oaa oac oao oap oar oas oc- oca occ oco ocp ocr ocs oo- ooa ooc ooo oop oor oos op- opa opc opo opp opr ops opy or- ora orc oro orp orr ors ory os- osa osc oso osp osr oss oya oyo oys p-p paa pac pao pap par pas pay pca pcc pco pcp pcr pcs poa poc poo pop por pos poy ppa ppc ppo ppp ppr pps pra prc pro prp prr prs pry ps- psa psc pso psp psr pss psy py- pya pyc pyo pyr pys ra- raa rac rao rap rar ras ray rca rcc rco rcp rcr rcs roa roc roo rop ror ros roy rpa rpc rpo rpp rpr rps rra rrc rrp rrr rrs rsa rsc rso rsp rsr rss ry- rya ryc ryo ryr rys ryy saa sac sao sap sar sas say sca scc sco scp scr scs soa soc soo sop sor sos soy spa spc spo spp spr sps spy sr- sra src sro srp srr srs sry ss- ssa ssc sso ssp ssr sss sy- sya syc syp syr sys yaa yac yao yap yar yas yay yca ycc yco ycp ycs ycy yoc yoo yop yor yos yoy ypa ypo yps yra yrc yro yrp yrs ysa ysc yso ysp ysr yss ysy yyc yys yyy