a-a a-c aaa aac aad aae aak aap ac- aca acc acd ace ack acp ad- ada adc add ade adk adp aea aec aed aee aek aep aka akc akd ake akk akp ap- apa apc apd ape apk app c-- caa cac cad cae cak cap cca ccc ccd cce cck ccp cda cdc cdd cde cdk cdp ce- cea cec ced cee cek cep cka ckc ckd cpa cpc cpd cpe cpk cpp daa dac dad dae dak dap dca dcc dcd dce dck dcp dda ddc ddd dde ddk ddp de- dea dec ded dee dek dep dka dkc dke dkk dkp dpa dpc dpd dpe dpk dpp eaa eac ead eae eak eap ec- eca ecc ecd ece eck ed- eda edc edd ede edk edp eea eec eed eee eek eep eka ekc ekd eke ekp ep- epa epc epd epe epp ka- kaa kac kad kae kak kap kca kcc kcd kce kck kcp kda kdc kde kdk kdp ke- kea kec ked kee kek kep kkc kke kkk kkp kpa kpc kpd kpe kpk kpp p-p paa pac pad pae pak pap pca pcc pcd pce pck pcp pda pdc pdd pde pdk pdp pea pec ped pee pek pep pka pkc pkd pke pkp ppa ppc ppd ppe ppk ppp