-al -er -ic a-a a-b a-c a-i a-t aaa aab aac aae aai aal aar aat ab- aba abb abc abe abi abl abr abt ac- aca acb acc ace aci acl acr act aea aeb aec aee aei ael aer aet ai- aia aib aic aie aii ail air ait al- ala alb alc ale ali all alr alt ar- ara arb arc are ari arl arr art at- ata atb atc ate ati atl atr att baa bab bac bae bai bal bar bat bba bbb bbc bbe bbi bbl bbr bbt bca bcb bcc bce bci bcl bcr bct be- bea beb bec bee bei bel ber bet bi- bia bib bic bie bii bil bir bit bla blb blc ble bli bll blr blt bra brb bre bri brl brr brt bta btb btc bte bti btl btr btt c-- caa cab cac cae cai cal car cat cba cbb cbc cbe cbi cbl cbr cbt cca ccb ccc cce cci ccl ccr cct ce- cea ceb cec cee cei cel cer cet ci- cia cib cic cie cii cil cir cit cl- cla clb clc cle cli cll clr clt cra crb crc cre cri crl crr crt cta ctb ctc cte cti ctl ctr ctt eaa eab eac eae eai eal ear eat eba ebb ebc ebe ebi ebl ebr ebt ec- eca ecb ecc ece eci ecl ecr ect eea eeb eec eee eel eer eet eia eib eic eie eii eil eir eit ela elb elc ele eli ell elr elt era erb erc ere eri erl err ert eta etb etc ete eti etl etr ett ia- iaa iab iac iae iai ial iar iat iba ibb ibc ibe ibi ibl ibr ibt ica icb icc ice ici icl icr ict ie- iea iec iee iei iel ier iet iia iib iic iie iii iil iir iit il- ila ilb ilc ile ili ill ilr ilt ir- ira irb irc ire iri irl irr irt ita itb itc ite iti itl itt la- laa lab lac lae lai lal lar lat lba lbb lbc lbe lbi lbl lbr lbt lca lcb lcc lce lci lcl lcr lct lea leb lec lee lei lel ler let lia lib lic lie lii lil lir lit lla llb llc lle lli lll llr llt lra lrb lrc lri lrr lrt lta ltb ltc lte lti ltl ltr ltt ra- raa rab rac rae rai ral rar rat rba rbb rbc rbe rbi rbl rbr rbt rca rcb rcc rce rci rcl rcr rct re- rea reb rec ree rei rel rer ret ria rib ric rie rii ril rir rit rla rlc rle rli rll rlr rlt rra rrb rrc rri rrl rrr rrt rta rtb rtc rte rti rtl rtr rtt taa tab tac tae tai tal tar tat tba tbb tbc tbe tbi tbl tbr tbt tca tcb tcc tce tci tcl tcr tct te- tea teb tec tee tei tel ter tet tia tib tic tie tii til tir tit tla tlc tle tli tll tlr tlt tra trb trc tre tri trl trr trt tta ttb ttc tte tti ttl ttr ttt