-er a-a a-c a-t aaa aac aad aae aaj aak aar aat ac- aca acc acd ace acj ack acr act ad- ada adc add ade adj adk adr adt aea aec aed aee aej aek aer aet aja ajc ajd aje ajj ajk ajr ajt aka akc akd ake akj akk akr ar- ara arc ard are arj ark arr art at- ata atc atd ate atr att c-- c-j caa cac cad cae caj cak car cat cca ccc ccd cce ccj cck ccr cct cda cdc cdd cde cdj cdk cdr cdt ce- cea cec ced cee cej cek cer cet cja cjc cjd cjk cjr cka ckc ckd ckt cra crc crd cre crj crk crr crt cta ctc ctd cte ctk ctr ctt daa dac dad dae daj dak dar dat dca dcc dcd dce dck dcr dct dda ddc ddd dde ddk ddr ddt de- dea dec ded dee dej dek der det dj- dja djc djd dje djk djt dka dkc dke dkk dkr dkt dra drc drd dre drj drk drr drt dta dtc dtd dte dtj dtk dtr dtt eaa eac ead eae eaj eak ear eat ec- eca ecc ecd ece ecj eck ecr ect ed- eda edc edd ede edj edk edr edt eea eec eed eee eek eer eet eja ejc ejd ejt eka ekc ekd eke ekr ekt era erc erd ere erk err ert eta etc etd ete etj etk etr ett j-d jaa jac jad jae jaj jak jar jat jca jcc jcd jce jck jcr jct jda jdc jde jdr jdt jea jec jed jee jej jek jer jet jja jjc jjj jjk jjr jka jkk jkr jkt jra jrc jrk jrr jrt jta jtc jte jtk jtr jtt k-t ka- kaa kac kad kae kaj kak kar kat kca kcc kcd kce kck kcr kct kda kdc kde kdk kdr kdt ke- kea kec ked kee kek ker ket kjc kje kjr kkc kke kkk kkr kkt kra krc krd krk krr krt kta ktc kte ktj ktk ktr ktt ra- raa rac rad rae raj rak rar rat rca rcc rcd rce rcj rcr rct rda rdc rdd rde rdj rdr rdt re- rea rec red ree rek rer ret rja rjc rjk rjr rkc rke rkk rkt rra rrc rrd rrk rrr rrt rta rtc rtd rte rtj rtk rtr rtt taa tac tad tae taj tak tar tat tca tcc tcd tce tcj tck tcr tct tda tdc tdd tde tdk tdr tdt te- tea tec ted tee tej tek ter tet tjc tjd tje tjr tka tkc tke tkk tkr tkt tra trc trd tre trk trr trt tta ttc ttd tte ttk ttr ttt