-al a-a a-c a-t aaa aac aad aal aan aas aat ac- aca acc acd acl acn acs act ad- ada adc add adl adn ads adt al- ala alc ald all aln als alt an- ana anc and anl ann ans ant as- asa asc asd asl asn ass ast at- ata atc atd atl atn ats att c-- caa cac cad cal can cas cat cca ccc ccd ccl ccn ccs cct cda cdc cdd cdl cdn cds cdt cl- cla clc cld cll cln cls clt cn- cna cnc cnd cnl cnn cns cnt csa csc csd csl csn css cst cta ctc ctd ctl ctn cts ctt daa dac dad dal dan das dat dca dcc dcd dcl dcn dcs dct dda ddc ddd ddl ddn dds ddt dl- dla dlc dld dll dls dlt dna dnc dnd dnl dnn dns dnt dsa dsc dsd dsl dsn dss dst dta dtc dtd dtl dtn dts dtt la- laa lac lad lal lan las lat lca lcc lcd lcl lcn lcs lct lda ldc ldd ldl ldn lds ldt lla llc lld lll lln lls llt lna lnc lnd lnl lnn lns lnt lsa lsc lsd lsl lsn lss lst lta ltc ltd ltl lts ltt naa nac nad nal nan nas nat nca ncc ncd ncl ncn ncs nct nda ndc ndd ndl ndn nds ndt nla nlc nld nll nln nls nlt nna nnc nnl nnn nns nnt nsa nsc nsd nsl nsn nss nst nta ntc ntd ntn nts ntt saa sac sad sal san sas sat sca scc scd scl scn scs sct sda sdc sdd sdl sdn sds sdt sla slc sld sll sln sls slt sna snc snd snl snn sns snt ss- ssa ssc ssd ssl ssn sss sst sta stc std stl stn sts stt taa tac tad tal tan tas tat tca tcc tcd tcl tcn tcs tct tda tdc tdd tdl tdn tds tdt tla tlc tld tll tln tls tlt tna tnc tnd tnl tnn tns tnt tsa tsc tsd tsl tsn tss tst tta ttc ttd ttl ttn tts ttt