-al -er a-a a-b a-i a-t aaa aab aae aai aak aal aar aat ab- aba abb abe abi abk abl abr abt aea aeb aee aei aek ael aer aet ai- aia aib aie aii aik ail air ait aka akb ake aki akk akl akr al- ala alb ale ali alk all alr alt ar- ara arb are ari ark arl arr art at- ata atb ate ati atl atr att baa bab bae bai bak bal bar bat bba bbb bbe bbi bbk bbl bbr bbt be- bea beb bee bei bek bel ber bet bi- bia bib bie bii bik bil bir bit bka bkb bke bkk bkl bkr bkt bla blb ble bli blk bll blr blt bra brb bre bri brk brl brr brt bta btb bte bti btk btl btr btt eaa eab eae eai eak eal ear eat eba ebb ebe ebi ebk ebl ebr ebt eea eeb eee eek eel eer eet eia eib eie eii eik eil eir eit eka ekb eke eki ekl ekr ekt ela elb ele eli elk ell elr elt era erb ere eri erk erl err ert eta etb ete eti etk etl etr ett ia- iaa iab iae iai ial iar iat iba ibb ibe ibi ibk ibl ibr ibt ie- iea iee iei iek iel ier iet iia iib iie iii iil iir iit ika ikb ike iki ikk ikl ikr ikt il- ila ilb ile ili ilk ill ilr ilt ir- ira irb ire iri irk irl irr irt ita itb ite iti itk itl itt k-t ka- kaa kab kae kai kak kal kar kat kba kbb kbe kbi kbk kbl kbr ke- kea keb kee kei kek kel ker ket kia kib kie kii kik kil kir kit kkb kke kki kkk kkl kkr kkt kl- kla klb kli klr klt kra kri krk krl krr krt kta ktb kte ktk ktl ktr ktt la- laa lab lae lai lak lal lar lat lba lbb lbe lbi lbk lbl lbr lbt lea leb lee lei lek lel ler let lia lib lie lii lik lil lir lit lka lkb lkl lkr lkt lla llb lle lli llk lll llr llt lra lrb lri lrk lrr lrt lta ltb lte lti ltk ltl ltr ltt ra- raa rab rae rai rak ral rar rat rba rbb rbe rbi rbk rbl rbr rbt re- rea reb ree rei rek rel rer ret ria rib rie rii rik ril rir rit rkb rke rkk rkt rla rle rli rll rlr rlt rra rrb rri rrk rrl rrr rrt rta rtb rte rti rtk rtl rtr rtt taa tab tae tai tak tal tar tat tba tbb tbe tbi tbk tbl tbr tbt te- tea teb tee tei tek tel ter tet tia tib tie tii tik til tir tit tka tkb tke tkk tkl tkr tkt tla tle tli tlk tll tlr tlt tra trb tre tri trk trl trr trt tta ttb tte tti ttk ttl ttr ttt