a-a a-c a-z aaa aac aad aao aap aas aay aaz ac- aca acc acd aco acp acs acy acz ad- ada adc add ado adp ads ady adz aoa aoc aod aoo aop aos ap- apa apc apd apo app aps apy as- asa asc asd aso asp ass asy asz ay- aya ayc ayd ayo ayp ays ayz az- aza azd azo azp azs azy azz c-- caa cac cad cao cap cas cay caz cca ccc ccd cco ccp ccs ccz cda cdc cdd cdo cdp cds cdy cdz co- coa coc cod coo cop cos coy coz cpa cpc cpd cpo cpp cps cpz csa csc csd cso csp css csy csz cya cyc cyd cyo cyp cys cz- czc czd czo daa dac dad dao dap das day daz dca dcc dcd dco dcp dcs dda ddc ddd ddo ddp dds ddy ddz doa doc dod doo dop dos doy doz dpa dpc dpd dpo dpp dps dpz dsa dsc dsd dso dsp dss dsy dsz dy- dya dyc dyd dyo dyp dys dyy dza dzd dzo dzp dzs oaa oac oad oao oap oas oc- oca occ ocd oco ocp ocs ocz 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 oza ozo ozs ozz p-p paa pac pad pao pap pas pay paz pca pcc pcd pco pcp pcs pda pdc pdd pdo pdp pds pdz poa poc pod poo pop pos poy poz ppa ppc ppd ppo ppp pps ppz ps- psa psc psd pso psp pss psy py- pya pyc pyd pyo pys pzc pzp saa sac sad sao sap sas say saz sca scc scd sco scp scs sda sdc sdd sdo sdp sds sdy sdz soa soc sod soo sop sos soy soz spa spc spd spo spp sps spy spz ss- ssa ssc ssd sso ssp sss ssz sy- sya syc syd syp sys sza szd szp yaa yac yad yao yap yas yay yaz 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 ysz yyc yys yyy yyz yzy zaa zac zad zao zap zas zay zaz zco zcs zds zo- zoa zoc zod zoo zos zpc zpo zpp zsa zsz zzs zzy zzz