-al -ic -ol a-a a-b a-c a-i aaa aab aac aad aaf aai aak aal aao aar ab- aba abb abc abd abf abi abk abl abo abr ac- aca acb acc acd acf aci ack acl aco acr ad- ada adb adc add adf adi adk adl ado adr af- afa afb afc afd aff afi afk afl afo afr ai- aia aib aic aid aif aii aik ail aio air aka akb akc akd aki akk akl ako akr al- ala alb alc ald alf ali alk all alo alr aoa aob aoc aod aof aoi aok aol aoo aor ar- ara arb arc ard arf ari ark arl aro arr baa bab bac bad baf bai bak bal bao bar bba bbb bbc bbd bbf bbi bbk bbl bbo bbr bca bcb bcc bcd bcf bci bck bcl bco bcr bda bdb bdc bdd bdf bdi bdk bdl bdo bdr bfa bfb bfc bfd bff bfi bfl bfo bfr bi- bia bib bic bid bif bii bik bil bio bir bka bkb bkc bkf bkk bkl bko bkr bla blb blc bld blf bli blk bll blo blr boa bob boc bod bof boi bok bol boo bor bra brb brd brf bri brk brl bro brr c-- caa cab cac cad caf cai cak cal cao car cba cbb cbc cbd cbf cbi cbk cbl cbo cbr cca ccb ccc ccd ccf cci cck ccl cco ccr cda cdb cdc cdd cdf cdi cdk cdl cdo cdr cfa cfb cfc cfd cff cfi cfk cfl cfo cfr ci- cia cib cic cid cif cii cik cil cio cir cka ckb ckc ckd cki cko cl- cla clb clc cld clf cli clk cll clo clr co- coa cob coc cod cof coi cok col coo cor cra crb crc crd crf cri crk crl cro crr daa dab dac dad daf dai dak dal dao dar dba dbb dbc dbd dbf dbi dbk dbl dbo dbr dca dcb dcc dcd dcf dci dck dcl dco dcr dda ddb ddc ddd ddf ddi ddk ddl ddo ddr dfa dfb dfc dfd dff dfi dfk dfl dfo dfr di- dia dib dic did dif dii dik dil dio dir dka dkb dkc dki dkk dkl dko dkr dl- dla dlb dlc dld dlf dli dlk dll dlo dlr doa dob doc dod dof doi dok dol doo dor dra drb drc drd dri drk drl dro drr faa fab fac fad faf fai fak fal fao far fba fbb fbc fbd fbf fbi fbk fbl fbo fbr fca fcb fcc fcd fcf fci fck fcl fco fcr fda fdb fdc fdd fdf fdi fdk fdl fdo fdr ffa ffc ffd fff ffi ffk ffl ffo ffr fia fib fic fid fif fii fik fil fir fka fkb fkc fkf fki fkk fkl fla flb flc fld flf fli fll flo flr foa fob foc fof foi fok fol foo for fra frb frc frd frf fri frk frl fro frr i-d i-f ia- iaa iab iac iad iaf iai ial iao iar iba ibb ibc ibd ibf ibi ibk ibl ibo ibr ica icb icc icd icf ici ick icl ico icr ida idb idc idd idf idi idk idl ido idr ifa ifb ifc ifd iff ifi ifl ifo ifr iia iib iic iid iif iii iil iio iir ika ikb ikc ikf iki ikk ikl iko ikr il- ila ilb ilc ild ilf ili ilk ill ilo ilr io- ioa iob ioc iod iof ioi iol ioo ior ir- ira irb irc ird irf iri irk irl iro irr ka- kaa kab kac kad kaf kai kak kal kao kar kba kbb kbc kbd kbf kbi kbk kbl kbo kbr kca kcb kcc kcd kci kck kcl kcr kda kdb kdc kdf kdk kdl kdo kdr kfa kfc kfd kff kfi kfo kia kib kic kid kif kii kik kil kio kir kkb kkc kki kkk kkl kkr kl- kla klb klc kld klf kli klo klr koa kob koc kod kof koi kok kol koo kor kra krc krd krf kri krk krl kro krr la- laa lab lac lad laf lai lak lal lao lar lba lbb lbc lbd lbf lbi lbk lbl lbo lbr lca lcb lcc lcd lcf lci lck lcl lco lcr lda ldb ldc ldd ldf ldi ldk ldl ldo ldr lfa lfb lfc lfd lff lfi lfk lfl lfo lfr lia lib lic lid lif lii lik lil lio lir lka lkb lkl lkr lla llb llc lld llf lli llk lll llo llr loa lob loc lod lof loi lok lol loo lor lra lrb lrc lrd lrf lri lrk lro lrr o-i oaa oab oac oad oaf oai oak oal oao oar ob- oba obb obc obd obf obi obk obl obo obr oc- oca ocb occ ocd ocf oci ock ocl oco ocr oda odb odc odd odf odi odl odo odr of- ofa ofb ofc ofd off ofi ofl ofo ofr oia oib oic oid oif oii oik oil oio oir oka okb okc okd oki okk okl oko okr ola olb olc old olf oli olk oll olo oo- ooa oob ooc ood oof ooi ook ool ooo oor or- ora orb orc ord orf ori ork orl oro orr ra- raa rab rac rad raf rai rak ral rao rar rba rbb rbc rbd rbf rbi rbk rbl rbo rbr rca rcb rcc rcd rcf rci rcl rco rcr rda rdb rdc rdd rdf rdi rdl rdo rdr rfa rfb rfc rfd rff rfi rfk rfl rfo rfr ria rib ric rid rif rii rik ril rio rir rkb rkc rkf rkk rko rla rlc rld rlf rli rll rlo rlr roa rob roc rod rof roi rok rol roo ror rra rrb rrc rrd rrf rri rrk rrl rrr