a-a a-b a-i aaa aab aad aai aak aap ab- aba abb abd abi abk abp ad- ada adb add adi adk adp ai- aia aib aid aii aik aip aka akb akd aki akk akp ap- apa apb apd api apk app b-p baa bab bad bai bak bap bba bbb bbd bbi bbk bbp bda bdb bdd bdi bdk bdp bi- bia bib bid bii bik bip bka bkb bkk bkp bpa bpb bpd bpi bpp daa dab dad dai dak dap dba dbb dbd dbi dbk dbp dda ddb ddd ddi ddk ddp di- dia dib did dii dik dip dka dkb dki dkk dkp dpa dpb dpd dpi dpk dpp i-d ia- iaa iab iad iai iap iba ibb ibd ibi ibk ibp ida idb idd idi idk idp iia iib iid iii iip ika ikb iki ikk ipa ipb ipd ipi ipp ka- kaa kab kad kai kak kap kba kbb kbd kbi kbk kbp kda kdb kdk kdp kia kib kid kii kik kip kkb kki kkk kkp kpa kpd kpi kpk kpp p-p paa pab pad pai pak pap pba pbb pbd pbi pbk pbp pda pdb pdd pdi pdk pdp pia pib pid pii pik pip pka pkb pkd pki pkp ppa ppb ppd ppi ppk ppp