-al -er -th a-a a-b a-c a-t aaa aab aac aae aah aal aar aat ab- aba abb abc abe abh abl abr abt ac- aca acb acc ace ach acl acr act aea aeb aec aee aeh ael aer aet aha ahb ahc ahe ahh ahl ahr aht al- ala alb alc ale alh all alr alt ar- ara arb arc are arh arl arr art at- ata atb atc ate ath atl atr att baa bab bac bae bah bal bar bat bba bbb bbc bbe bbh bbl bbr bbt bca bcb bcc bce bch bcl bcr bct be- bea beb bec bee beh bel ber bet bha bhb bhc bhe bhh bhl bhr bht bla blb blc ble blh bll blr blt bra brb bre brh brl brr brt bta btb btc bte bth btl btr btt c-- caa cab cac cae cah cal car cat cba cbb cbc cbe cbh cbl cbr cbt cca ccb ccc cce cch ccl ccr cct ce- cea ceb cec cee ceh cel cer cet ch- cha chb chc che chh chl chr cht cl- cla clb clc cle clh cll clr clt cra crb crc cre crh crl crr crt cta ctb ctc cte cth ctl ctr ctt eaa eab eac eae eah eal ear eat eba ebb ebc ebe ebh ebl ebr ebt ec- eca ecb ecc ece ech ecl ecr ect eea eeb eec eee eel eer eet eha ehb ehc ehe ehh ehl ehr eht ela elb elc ele elh ell elr elt era erb erc ere erh erl err ert eta etb etc ete eth etl etr ett haa hab hac hae hah hal har hat hba hbb hbc hbe hbh hbl hbr hbt hca hcb hcc hce hch hcl hcr hct he- hea heb hec hee heh hel her het hha hhb hhc hhe hhh hhl hhr hht hla hlb hlc hle hlh hll hlr hlt hr- hra hrb hrc hre hrh hrl hrr hrt hta htb htc hte hth htl htr htt la- laa lab lac lae lah lal lar lat lba lbb lbc lbe lbh lbl lbr lbt lca lcb lcc lce lch lcl lcr lct lea leb lec lee leh lel ler let lha lhb lhc lhh lhr lht lla llb llc lle lll llr llt lra lrb lrc lrh lrr lrt lta ltb ltc lte lth ltl ltr ltt ra- raa rab rac rae rah ral rar rat rba rbb rbc rbe rbh rbl rbr rbt rca rcb rcc rce rch rcl rcr rct re- rea reb rec ree reh rel rer ret rh- rha rhb rhc rhe rhh rhl rhr rht rla rlc rle rlh rll rlr rlt rra rrb rrc rrh rrl rrr rrt rta rtb rtc rte rtl rtr rtt taa tab tac tae tah tal tar tat tba tbb tbc tbe tbh tbl tbr tbt tca tcb tcc tce tch tcl tcr tct te- tea teb tec tee teh tel ter tet th- tha thb thc the thh thl thr tht tla tlc tle tlh tll tlr tlt tra trb trc tre trh trl trr trt tta ttb ttc tte tth ttl ttr ttt