-al -ol a-a a-b a-i aaa aab aad aai aal aao aap aar ab- aba abb abd abi abl abo abp abr ad- ada adb add adi adl ado adp adr ai- aia aib aid aii ail aio aip air al- ala alb ald ali all alo alp alr aoa aob aod aoi aol aoo aop aor ap- apa apb apd api apl apo app apr ar- ara arb ard ari arl aro arp arr b-p baa bab bad bai bal bao bap bar bba bbb bbd bbi bbl bbo bbp bbr bda bdb bdd bdi bdl bdo bdp bdr bi- bia bib bid bii bil bio bip bir bla blb bld bli bll blo blp blr boa bob bod boi bol boo bop bor bpa bpb bpd bpi bpl bpo bpp bpr bra brb brd bri brl bro brp brr daa dab dad dai dal dao dap dar dba dbb dbd dbi dbl dbo dbp dbr dda ddb ddd ddi ddl ddo ddp ddr di- dia dib did dii dil dio dip dir dl- dla dlb dld dli dll dlo dlp dlr doa dob dod doi dol doo dop dor dpa dpb dpd dpi dpl dpo dpp dpr dra drb drd dri drl dro drp drr i-d ia- iaa iab iad iai ial iao iap iar iba ibb ibd ibi ibl ibo ibp ibr ida idb idd idi idl ido idp idr iia iib iid iii iil iio iip iir il- ila ilb ild ili ill ilo ilp ilr io- ioa iob iod ioi iol ioo iop ior ipa ipb ipd ipi ipl ipo ipp ipr ir- ira irb ird iri irl iro irp irr l-p la- laa lab lad lai lal lao lap lar lba lbb lbd lbi lbl lbo lbp lbr lda ldb ldd ldi ldl ldo ldp ldr lia lib lid lii lil lio lip lir lla llb lld lli lll llo llp llr loa lob lod loi lol loo lop lor lpa lpb lpd lpi lpl lpo lpp lpr lra lrb lrd lri lro lrp lrr o-i oaa oab oad oai oal oao oap oar ob- oba obb obd obi obl obo obp obr oda odb odd odi odl odo odp odr oia oib oid oii oil oio oip oir ola olb old oli oll olo olp oo- ooa oob ood ooi ool ooo oop oor op- opa opb opd opi opl opo opp opr or- ora orb ord ori orl oro orp orr p-p paa pab pad pai pal pao pap par pba pbb pbd pbi pbl pbo pbp pbr pda pdb pdd pdi pdl pdo pdp pdr pia pib pid pii pil pio pip pir pla plb pld pli pll plo plp plr poa pob pod poi pol poo pop por ppa ppb ppd ppi ppl ppo ppp ppr pra prb prd pri prl pro prp prr ra- raa rab rad rai ral rao rap rar rba rbb rbd rbi rbl rbo rbp rbr rda rdb rdd rdi rdl rdo rdp rdr ria rib rid rii ril rio rip rir rla rld rli rll rlo rlp rlr roa rob rod roi rol roo rop ror rpa rpb rpd rpi rpl rpo rpp rpr rra rrb rrd rri rrl rrp rrr