a-a a-b a-i aaa aab aad aah aai aao aap aar ab- aba abb abd abh abi abo abp abr ad- ada adb add adh adi ado adp adr aha ahb ahd ahh ahi aho ahp ahr ai- aia aib aid aih aii aio aip air aoa aob aod aoh aoi aoo aop aor ap- apa apb apd aph api apo app apr ar- ara arb ard arh ari aro arp arr b-p baa bab bad bah bai bao bap bar bba bbb bbd bbh bbi bbo bbp bbr bda bdb bdd bdh bdi bdo bdp bdr bha bhb bhd bhh bhi bho bhp bhr bi- bia bib bid bih bii bio bip bir boa bob bod boh boi boo bop bor bpa bpb bpd bph bpi bpo bpp bpr bra brb brd brh bri bro brp brr daa dab dad dah dai dao dap dar dba dbb dbd dbh dbi dbo dbp dbr dda ddb ddd ddh ddi ddo ddp ddr dh- dha dhb dhd dhh dhi dho dhp dhr di- dia dib did dih dii dio dip dir doa dob dod doh doi doo dop dor dpa dpb dpd dph dpi dpo dpp dpr dra drb drd dri dro drp drr h-i haa hab had hah hai hao hap har hba hbb hbd hbh hbi hbo hbp hbr hda hdb hdd hdh hdi hdo hdp hdr hha hhb hhd hhh hhi hho hhp hhr hia hib hid hih hii hio hip hir hoa hob hod hoh hoi hoo hop hor hpa hpb hpd hph hpi hpo hpp hpr hr- hra hrb hrd hrh hri hro hrp hrr i-d ia- iaa iab iad iah iai iao iap iar iba ibb ibd ibh ibi ibo ibp ibr ida idb idd idh idi ido idp idr iha ihb ihd ihh ihi iho ihp ihr iia iib iid iih iii iio iip iir io- ioa iob iod ioh ioi ioo iop ior ipa ipb ipd ipi ipo ipp ipr ir- ira irb ird iri iro irp irr o-i oaa oab oad oah oai oao oap oar ob- oba obb obd obh obi obo obp obr oda odb odd odh odi odo odp odr oha ohd ohh ohi oho ohp ohr oia oib oid oii oio oip oir oo- ooa oob ood ooh ooi ooo oop oor op- opa opb opd oph opi opo opp opr or- ora orb ord orh ori oro orp orr p-p paa pab pad pah pai pao pap par pba pbb pbd pbi pbo pbp pbr pda pdb pdd pdh pdi pdo pdp pdr pha phb phd phi pho php phr pia pib pid pih pii pio pip pir poa pob pod poh poi poo pop por ppa ppb ppd pph ppi ppo ppp ppr pra prb prd prh pri pro prp prr ra- raa rab rad rah rai rao rap rar rba rbb rbd rbh rbi rbo rbp rbr rda rdb rdd rdh rdi rdo rdp rdr rh- rha rhb rhd rhh rhi rho rhp rhr ria rib rid rih rii rio rip rir roa rob rod roh roi roo rop ror rpa rpb rpd rph rpi rpo rpp rpr rra rrb rrd rrh rri rrp rrr