a-a a-b a-i aaa aab aad aai aak aap aar ab- aba abb abd abi abk abp abr ad- ada adb add adi adk adp adr ai- aia aib aid aii aik aip air aka akb akd aki akk akp akr ap- apa apb apd api apk app apr ar- ara arb ard ari ark arp arr b-p baa bab bad bai bak bap bar bba bbb bbd bbi bbk bbp bbr bda bdb bdd bdi bdk bdp bdr bi- bia bib bid bii bik bip bir bka bkb bkk bkp bkr bpa bpb bpd bpi bpp bpr bra brb brd bri brk brp brr daa dab dad dai dak dap dar dba dbb dbd dbi dbk dbp dbr dda ddb ddd ddi ddk ddp ddr di- dia dib did dii dik dip dir dka dkb dki dkk dkp dkr dpa dpb dpd dpi dpk dpp dpr dra drb drd dri drk drp drr i-d ia- iaa iab iad iai iap iar iba ibb ibd ibi ibk ibp ibr ida idb idd idi idk idp idr iia iib iid iii iip iir ika ikb iki ikk ikr ipa ipb ipd ipi ipp ipr ir- ira irb ird iri irk irp irr ka- kaa kab kad kai kak kap kar kba kbb kbd kbi kbk kbp kbr kda kdb kdk kdp kdr kia kib kid kii kik kip kir kkb kki kkk kkp kkr kpa kpd kpi kpk kpp kpr kra krd kri krk krp krr p-p paa pab pad pai pak pap par pba pbb pbd pbi pbk pbp pbr pda pdb pdd pdi pdk pdp pdr pia pib pid pii pik pip pir pka pkb pkd pki pkp pkr ppa ppb ppd ppi ppk ppp ppr pra prb prd pri prk prp prr ra- raa rab rad rai rak rap rar rba rbb rbd rbi rbk rbp rbr rda rdb rdd rdi rdp rdr ria rib rid rii rik rip rir rkb rkk rkp rpa rpb rpd rpi rpk rpp rpr rra rrb rrd rri rrk rrp rrr