-al -er a-a a-c aaa aac aad aae aak aal aar ac- aca acc acd ace ack acl acr ad- ada adc add ade adk adl adr aea aec aed aee aek ael aer aka akc akd ake akk akl akr al- ala alc ald ale alk all alr ar- ara arc ard are ark arl arr c-- caa cac cad cae cak cal car cca ccc ccd cce cck ccl ccr cda cdc cdd cde cdk cdl cdr ce- cea cec ced cee cek cel cer cka ckc ckd cl- cla clc cld cle clk cll clr cra crc crd cre crk crl crr daa dac dad dae dak dal dar dca dcc dcd dce dck dcl dcr dda ddc ddd dde ddk ddl ddr de- dea dec ded dee dek del der dka dkc dke dkk dkl dkr dl- dla dlc dld dle dlk dll dlr dra drc drd dre drk drl drr eaa eac ead eae eak eal ear ec- eca ecc ecd ece eck ecl ecr ed- eda edc edd ede edk edl edr eea eec eed eee eek eel eer eka ekc ekd eke ekl ekr ela elc eld ele elk ell elr era erc erd ere erk erl err ka- kaa kac kad kae kak kal kar kca kcc kcd kce kck kcl kcr kda kdc kde kdk kdl kdr ke- kea kec ked kee kek kel ker kkc kke kkk kkl kkr kl- kla klc kld klr kra krc krd krk krl krr la- laa lac lad lae lak lal lar lca lcc lcd lce lck lcl lcr lda ldc ldd lde ldk ldl ldr lea lec led lee lek lel ler lka lkl lkr lla llc lld lle llk lll llr lra lrc lrd lrk lrr ra- raa rac rad rae rak ral rar rca rcc rcd rce rcl rcr rda rdc rdd rde rdl rdr re- rea rec red ree rek rel rer rkc rke rkk rla rlc rld rle rll rlr rra rrc rrd rrk rrl rrr