a-a a-c aaa aac aad aao aap aas aay ac- aca acc acd aco acp acs acy ad- ada adc add ado adp ads ady aoa aoc aod aoo aop aos ap- apa apc apd apo app aps apy as- asa asc asd aso asp ass asy ay- aya ayc ayd ayo ayp ays c-- caa cac cad cao cap cas cay cca ccc ccd cco ccp ccs cda cdc cdd cdo cdp cds cdy co- coa coc cod coo cop cos coy cpa cpc cpd cpo cpp cps csa csc csd cso csp css csy cya cyc cyd cyo cyp cys daa dac dad dao dap das day dca dcc dcd dco dcp dcs dda ddc ddd ddo ddp dds ddy doa doc dod doo dop dos doy dpa dpc dpd dpo dpp dps dsa dsc dsd dso dsp dss dsy dy- dya dyc dyd dyo dyp dys dyy oaa oac oad oao oap oas oc- oca occ ocd oco ocp ocs oda odc odd odo odp ods oo- ooa ooc ood ooo oop oos op- opa opc opd opo opp ops opy os- osa osc osd oso osp oss oya oyd oyo oys p-p paa pac pad pao pap pas pay pca pcc pcd pco pcp pcs pda pdc pdd pdo pdp pds poa poc pod poo pop pos poy ppa ppc ppd ppo ppp pps ps- psa psc psd pso psp pss psy py- pya pyc pyd pyo pys saa sac sad sao sap sas say sca scc scd sco scp scs sda sdc sdd sdo sdp sds sdy soa soc sod soo sop sos soy spa spc spd spo spp sps spy ss- ssa ssc ssd sso ssp sss sy- sya syc syd syp sys yaa yac yad yao yap yas yay yca ycc ycd yco ycp ycs ycy yda ydo yds ydy yoc yod yoo yop yos yoy ypa ypd ypo yps ysa ysc yso ysp yss ysy yyc yys yyy