-al -ic a-a a-b a-c a-i a-t aaa aab aac aae aai aak aal aat ab- aba abb abc abe abi abk abl abt ac- aca acb acc ace aci ack acl act aea aeb aec aee aei aek ael aet ai- aia aib aic aie aii aik ail ait aka akb akc ake aki akk akl al- ala alb alc ale ali alk all alt at- ata atb atc ate ati atl att baa bab bac bae bai bak bal bat bba bbb bbc bbe bbi bbk bbl bbt bca bcb bcc bce bci bck bcl bct be- bea beb bec bee bei bek bel bet bi- bia bib bic bie bii bik bil bit bka bkb bkc bke bkk bkl bkt bla blb blc ble bli blk bll blt bta btb btc bte bti btk btl btt c-- caa cab cac cae cai cak cal cat cba cbb cbc cbe cbi cbk cbl cbt cca ccb ccc cce cci cck ccl cct ce- cea ceb cec cee cei cek cel cet ci- cia cib cic cie cii cik cil cit cka ckb ckc cki ckt cl- cla clb clc cle cli clk cll clt cta ctb ctc cte cti ctk ctl ctt eaa eab eac eae eai eak eal eat eba ebb ebc ebe ebi ebk ebl ebt ec- eca ecb ecc ece eci eck ecl ect eea eeb eec eee eek eel eet eia eib eic eie eii eik eil eit eka ekb ekc eke eki ekl ekt ela elb elc ele eli elk ell elt eta etb etc ete eti etk etl ett ia- iaa iab iac iae iai ial iat iba ibb ibc ibe ibi ibk ibl ibt ica icb icc ice ici ick icl ict ie- iea iec iee iei iek iel iet iia iib iic iie iii iil iit ika ikb ikc ike iki ikk ikl ikt il- ila ilb ilc ile ili ilk ill ilt ita itb itc ite iti itk itl itt k-t ka- kaa kab kac kae kai kak kal kat kba kbb kbc kbe kbi kbk kbl kca kcb kcc kce kci kck kcl kct ke- kea keb kec kee kei kek kel ket kia kib kic kie kii kik kil kit kkb kkc kke kki kkk kkl kkt kl- kla klb klc kli klt kta ktb ktc kte ktk ktl ktt la- laa lab lac lae lai lak lal lat lba lbb lbc lbe lbi lbk lbl lbt lca lcb lcc lce lci lck lcl lct lea leb lec lee lei lek lel let lia lib lic lie lii lik lil lit lka lkb lkl lkt lla llb llc lle lli llk lll llt lta ltb ltc lte lti ltk ltl ltt taa tab tac tae tai tak tal tat tba tbb tbc tbe tbi tbk tbl tbt tca tcb tcc tce tci tck tcl tct te- tea teb tec tee tei tek tel tet tia tib tic tie tii tik til tit tka tkb tkc tke tkk tkl tkt tla tlc tle tli tlk tll tlt tta ttb ttc tte tti ttk ttl ttt