-er a-a a-c a-t a-z aaa aac aad aae aar aat aaz ac- aca acc acd ace acr act acz ad- ada adc add ade adr adt adz aea aec aed aee aer aet aez ar- ara arc ard are arr art arz at- ata atc atd ate atr att atz az- aza azd aze azt azz c-- caa cac cad cae car cat caz cca ccc ccd cce ccr cct ccz cda cdc cdd cde cdr cdt cdz ce- cea cec ced cee cer cet cez cra crc crd cre crr crt crz cta ctc ctd cte ctr ctt ctz cz- czc czd cze czt daa dac dad dae dar dat daz dca dcc dcd dce dcr dct dda ddc ddd dde ddr ddt ddz de- dea dec ded dee der det dez dra drc drd dre drr drt drz dta dtc dtd dte dtr dtt dtz dza dzd dze dzr eaa eac ead eae ear eat eaz ec- eca ecc ecd ece ecr ect ed- eda edc edd ede edr edt eea eec eed eee eer eet era erc erd ere err ert erz eta etc etd ete etr ett etz eze ezr ezz ra- raa rac rad rae rar rat raz rca rcc rcd rce rcr rct rda rdc rdd rde rdr rdt re- rea rec red ree rer ret rez rra rrc rrd rrr rrt rta rtc rtd rte rtr rtt rtz rza rze taa tac tad tae tar tat taz tca tcc tcd tce tcr tct tda tdc tdd tde tdr tdt te- tea tec ted tee ter tet tez tra trc trd tre trr trt trz tta ttc ttd tte ttr ttt tza tzd tze zaa zac zad zar zat zaz zce zdt zea zec zed zee zer zet zez zta zte ztr zzr zzt zzz