-al a-a a-c a-t aaa aac aae aal aat ac- aca acc ace acl act aea aec aee ael aet al- ala alc ale all alt at- ata atc ate atl att c-- caa cac cae cal cat cca ccc cce ccl cct ce- cea cec cee cel cet cl- cla clc cle cll clt cta ctc cte ctl ctt eaa eac eae eal eat ec- eca ecc ece ecl ect eea eec eee eel eet ela elc ele ell elt eta etc ete etl ett la- laa lac lae lal lat lca lcc lce lcl lct lea lec lee lel let lla llc lle lll llt lta ltc lte ltl ltt taa tac tae tal tat tca tcc tce tcl tct te- tea tec tee tel tet tla tlc tle tll tlt tta ttc tte ttl ttt