-er a-a a-c aaa aac aae aaj aak aap aar ac- aca acc ace acj ack acp acr aea aec aee aej aek aep aer aja ajc aje ajj ajk ajp ajr aka akc ake akj akk akp akr ap- apa apc ape apj apk app apr ar- ara arc are arj ark arp arr c-- c-j caa cac cae caj cak cap car cca ccc cce ccj cck ccp ccr ce- cea cec cee cej cek cep cer cja cjc cjk cjp cjr cka ckc cpa cpc cpe cpj cpk cpp cpr cra crc cre crj crk crp crr eaa eac eae eaj eak eap ear ec- eca ecc ece ecj eck ecr eea eec eee eek eep eer eja ejc ejp eka ekc eke ekp ekr ep- epa epc epe epp epr era erc ere erk erp err jaa jac jae jaj jak jap jar jca jcc jce jck jcp jcr jea jec jee jej jek jep jer jja jjc jjj jjk jjp jjr jka jkk jkp jkr jpa jpc jpe jpj jpp jpr jra jrc jrk jrp jrr ka- kaa kac kae kaj kak kap kar kca kcc kce kck kcp kcr ke- kea kec kee kek kep ker kjc kje kjr kkc kke kkk kkp kkr kpa kpc kpe kpk kpp kpr kra krc krk krp krr p-p paa pac pae paj pak pap par pca pcc pce pcj pck pcp pcr pea pec pee pek pep per pja pjc pjp pka pkc pke pkp pkr ppa ppc ppe ppj ppk ppp ppr pra prc pre prk prp prr ra- raa rac rae raj rak rap rar rca rcc rce rcj rcp rcr re- rea rec ree rek rep rer rja rjc rjk rjp rjr rkc rke rkk rkp rpa rpc rpe rpk rpp rpr rra rrc rrk rrp rrr