-al -ol a-a a-c a-t aaa aac aad aal aao aar aat ac- aca acc acd acl aco acr act ad- ada adc add adl ado adr adt al- ala alc ald all alo alr alt aoa aoc aod aol aoo aor aot ar- ara arc ard arl aro arr art at- ata atc atd atl ato atr att c-- caa cac cad cal cao car cat cca ccc ccd ccl cco ccr cct cda cdc cdd cdl cdo cdr cdt cl- cla clc cld cll clo clr clt co- coa coc cod col coo cor cot cra crc crd crl cro crr crt cta ctc ctd ctl cto ctr ctt daa dac dad dal dao dar dat dca dcc dcd dcl dco dcr dct dda ddc ddd ddl ddo ddr ddt dl- dla dlc dld dll dlo dlr dlt doa doc dod dol doo dor dot dra drc drd drl dro drr drt dta dtc dtd dtl dto dtr dtt la- laa lac lad lal lao lar lat lca lcc lcd lcl lco lcr lct lda ldc ldd ldl ldo ldr ldt lla llc lld lll llo llr llt loa loc lod lol loo lor lot lra lrc lrd lro lrr lrt lta ltc ltd ltl lto ltr ltt oaa oac oad oal oao oar oat oc- oca occ ocd ocl oco ocr oct oda odc odd odl odo odr odt ola olc old oll olo olt oo- ooa ooc ood ool ooo oor oot or- ora orc ord orl oro orr ort ot- ota otc otd otl oto otr ott ra- raa rac rad ral rao rar rat rca rcc rcd rcl rco rcr rct rda rdc rdd rdl rdo rdr rdt rla rlc rld rll rlo rlr rlt roa roc rod rol roo ror rot rra rrc rrd rrl rrr rrt rta rtc rtd rtl rto rtr rtt taa tac tad tal tao tar tat tca tcc tcd tcl tco tcr tct tda tdc tdd tdl tdo tdr tdt tla tlc tld tll tlo tlr tlt to- toa toc tod tol too tor tot tra trc trd trl tro trr trt tta ttc ttd ttl tto ttr ttt