-al a-a a-c aaa aac aad aal aan ac- aca acc acd acl acn ad- ada adc add adl adn al- ala alc ald all aln an- ana anc and anl ann c-- caa cac cad cal can cca ccc ccd ccl ccn cda cdc cdd cdl cdn cl- cla clc cld cll cln cn- cna cnc cnd cnl cnn daa dac dad dal dan dca dcc dcd dcl dcn dda ddc ddd ddl ddn dl- dla dlc dld dll dna dnc dnd dnl dnn la- laa lac lad lal lan lca lcc lcd lcl lcn lda ldc ldd ldl ldn lla llc lld lll lln lna lnc lnd lnl lnn naa nac nad nal nan nca ncc ncd ncl ncn nda ndc ndd ndl ndn nla nlc nld nll nln nna nnc nnl nnn