-al a-a a-c a-t aaa aac aal aam aat ac- aca acc acl acm act al- ala alc all alm alt ama amc aml amm amt at- ata atc atl atm att c-- caa cac cal cam cat cca ccc ccl ccm cct cl- cla clc cll clm clt cma cmc cml cmm cmt cta ctc ctl ctm ctt la- laa lac lal lam lat lca lcc lcl lcm lct lla llc lll llm llt lma lmc lml lmm lmt lta ltc ltl ltm ltt maa mac mal mam mat mc- mca mcc mcl mcm mct mla mlc mll mlm mlt mma mmc mml mmm mmt mta mtc mtl mtm mtt taa tac tal tam tat tca tcc tcl tcm tct tla tlc tll tlm tlt tma tmc tml tmm tmt tta ttc ttl ttm ttt