-al a-a a-b a-i aaa aab aad aai aal aap ab- aba abb abd abi abl abp ad- ada adb add adi adl adp ai- aia aib aid aii ail aip al- ala alb ald ali all alp ap- apa apb apd api apl app b-p baa bab bad bai bal bap bba bbb bbd bbi bbl bbp bda bdb bdd bdi bdl bdp bi- bia bib bid bii bil bip bla blb bld bli bll blp bpa bpb bpd bpi bpl bpp daa dab dad dai dal dap dba dbb dbd dbi dbl dbp dda ddb ddd ddi ddl ddp di- dia dib did dii dil dip dl- dla dlb dld dli dll dlp dpa dpb dpd dpi dpl dpp i-d ia- iaa iab iad iai ial iap iba ibb ibd ibi ibl ibp ida idb idd idi idl idp iia iib iid iii iil iip il- ila ilb ild ili ill ilp ipa ipb ipd ipi ipl ipp l-p la- laa lab lad lai lal lap lba lbb lbd lbi lbl lbp lda ldb ldd ldi ldl ldp lia lib lid lii lil lip lla llb lld lli lll llp lpa lpb lpd lpi lpl lpp p-p paa pab pad pai pal pap pba pbb pbd pbi pbl pbp pda pdb pdd pdi pdl pdp pia pib pid pii pil pip pla plb pld pli pll plp ppa ppb ppd ppi ppl ppp