a-a a-c aaa aac aap aar aas aay ac- aca acc acp acr acs acy ap- apa apc app apr aps apy ar- ara arc arp arr ars ary as- asa asc asp asr ass asy ay- aya ayc ayp ayr ays c-- caa cac cap car cas cay cca ccc ccp ccr ccs cpa cpc cpp cpr cps cra crc crp crr crs cry csa csc csp csr css csy cya cyc cyp cyr cys p-p paa pac pap par pas pay pca pcc pcp pcr pcs ppa ppc ppp ppr pps pra prc prp prr prs pry ps- psa psc psp psr pss psy py- pya pyc pyr pys ra- raa rac rap rar ras ray rca rcc rcp rcr rcs rpa rpc rpp rpr rps rra rrc rrp rrr rrs rsa rsc rsp rsr rss ry- rya ryc ryr rys ryy saa sac sap sar sas say sca scc scp scr scs spa spc spp spr sps spy sr- sra src srp srr srs sry ss- ssa ssc ssp ssr sss sy- sya syc syp syr sys yaa yac yap yar yas yay yca ycc ycp ycs ycy ypa yps yra yrc yrp yrs ysa ysc ysp ysr yss ysy yyc yys yyy