-er a-a a-c aaa aac aad aae aaj aak aar ac- aca acc acd ace acj ack acr ad- ada adc add ade adj adk adr aea aec aed aee aej aek aer aja ajc ajd aje ajj ajk ajr aka akc akd ake akj akk akr ar- ara arc ard are arj ark arr c-- c-j caa cac cad cae caj cak car cca ccc ccd cce ccj cck ccr cda cdc cdd cde cdj cdk cdr ce- cea cec ced cee cej cek cer cja cjc cjd cjk cjr cka ckc ckd cra crc crd cre crj crk crr daa dac dad dae daj dak dar dca dcc dcd dce dck dcr dda ddc ddd dde ddk ddr de- dea dec ded dee dej dek der dj- dja djc djd dje djk dka dkc dke dkk dkr dra drc drd dre drj drk drr eaa eac ead eae eaj eak ear ec- eca ecc ecd ece ecj eck ecr ed- eda edc edd ede edj edk edr eea eec eed eee eek eer eja ejc ejd eka ekc ekd eke ekr era erc erd ere erk err j-d jaa jac jad jae jaj jak jar jca jcc jcd jce jck jcr jda jdc jde jdr jea jec jed jee jej jek jer jja jjc jjj jjk jjr jka jkk jkr jra jrc jrk jrr ka- kaa kac kad kae kaj kak kar kca kcc kcd kce kck kcr kda kdc kde kdk kdr ke- kea kec ked kee kek ker kjc kje kjr kkc kke kkk kkr kra krc krd krk krr ra- raa rac rad rae raj rak rar rca rcc rcd rce rcj rcr rda rdc rdd rde rdj rdr re- rea rec red ree rek rer rja rjc rjk rjr rkc rke rkk rra rrc rrd rrk rrr