-al -er a-a a-c aaa aac aad aae aaf aal aar aas ac- aca acc acd ace acf acl acr acs ad- ada adc add ade adf adl adr ads aea aec aed aee aef ael aer aes af- afa afc afd afe aff afl afr afs al- ala alc ald ale alf all alr als ar- ara arc ard are arf arl arr ars as- asa asc asd ase asf asl asr ass c-- caa cac cad cae caf cal car cas cca ccc ccd cce ccf ccl ccr ccs cda cdc cdd cde cdf cdl cdr cds ce- cea cec ced cee cef cel cer ces cfa cfc cfd cfe cff cfl cfr cfs cl- cla clc cld cle clf cll clr cls cra crc crd cre crf crl crr crs csa csc csd cse csf csl csr css daa dac dad dae daf dal dar das dca dcc dcd dce dcf dcl dcr dcs dda ddc ddd dde ddf ddl ddr dds de- dea dec ded dee def del der des dfa dfc dfd dfe dff dfl dfr dfs dl- dla dlc dld dle dlf dll dlr dls dra drc drd dre drl drr drs dsa dsc dsd dse dsf dsl dsr dss eaa eac ead eae eaf eal ear eas ec- eca ecc ecd ece ecf ecl ecr ecs ed- eda edc edd ede edf edl edr eds eea eec eed eee eef eel eer ees ef- efa efc efd efe eff efl efr efs ela elc eld ele elf ell elr els era erc erd ere erf erl err ers es- esa esc esd ese esf esl esr ess faa fac fad fae faf fal far fas fca fcc fcd fce fcf fcl fcr fcs fda fdc fdd fde fdf fdl fdr fds fea fec fed fee fef fel fer fes ffa ffc ffd ffe fff ffl ffr ffs fla flc fld fle flf fll flr fls fra frc frd fre frf frl frr frs fsa fsc fsd fse fsf fsl fsr fss la- laa lac lad lae laf lal lar las lca lcc lcd lce lcf lcl lcr lcs lda ldc ldd lde ldf ldl ldr lds lea lec led lee lef lel ler les lfa lfc lfd lfe lff lfl lfr lfs lla llc lld lle llf lll llr lls lra lrc lrd lrf lrr lrs lsa lsc lsd lse lsf lsl lsr lss ra- raa rac rad rae raf ral rar ras rca rcc rcd rce rcf rcl rcr rcs rda rdc rdd rde rdf rdl rdr rds re- rea rec red ree ref rel rer res rfa rfc rfd rfe rff rfl rfr rfs rla rlc rld rle rlf rll rlr rls rra rrc rrd rrf rrl rrr rrs rsa rsc rsd rse rsf rsl rsr rss saa sac sad sae saf sal sar sas sca scc scd sce scf scl scr scs sda sdc sdd sde sdf sdl sdr sds se- sea sec sed see sef sel ser ses sfa sfc sfd sfe sff sfl sfr sfs sla slc sld sle slf sll slr sls sr- sra src srd sre srf srl srr srs ss- ssa ssc ssd sse ssf ssl ssr sss