-al -ol a-a a-c aaa aac aad aaf aal aao aar ac- aca acc acd acf acl aco acr ad- ada adc add adf adl ado adr af- afa afc afd aff afl afo afr al- ala alc ald alf all alo alr aoa aoc aod aof aol aoo aor ar- ara arc ard arf arl aro arr c-- caa cac cad caf cal cao car cca ccc ccd ccf ccl cco ccr cda cdc cdd cdf cdl cdo cdr cfa cfc cfd cff cfl cfo cfr cl- cla clc cld clf cll clo clr co- coa coc cod cof col coo cor cra crc crd crf crl cro crr daa dac dad daf dal dao dar dca dcc dcd dcf dcl dco dcr dda ddc ddd ddf ddl ddo ddr dfa dfc dfd dff dfl dfo dfr dl- dla dlc dld dlf dll dlo dlr doa doc dod dof dol doo dor dra drc drd drl dro drr faa fac fad faf fal fao far fca fcc fcd fcf fcl fco fcr fda fdc fdd fdf fdl fdo fdr ffa ffc ffd fff ffl ffo ffr fla flc fld flf fll flo flr foa foc fof fol foo for fra frc frd frf frl fro frr la- laa lac lad laf lal lao lar lca lcc lcd lcf lcl lco lcr lda ldc ldd ldf ldl ldo ldr lfa lfc lfd lff lfl lfo lfr lla llc lld llf lll llo llr loa loc lod lof lol loo lor lra lrc lrd lrf lro lrr oaa oac oad oaf oal oao oar oc- oca occ ocd ocf ocl oco ocr oda odc odd odf odl odo odr of- ofa ofc ofd off ofl ofo ofr ola olc old olf oll olo oo- ooa ooc ood oof ool ooo oor or- ora orc ord orf orl oro orr ra- raa rac rad raf ral rao rar rca rcc rcd rcf rcl rco rcr rda rdc rdd rdf rdl rdo rdr rfa rfc rfd rff rfl rfo rfr rla rlc rld rlf rll rlo rlr roa roc rod rof rol roo ror rra rrc rrd rrf rrl rrr