-al a-a a-b a-i aaa aab aad aai aal aas ab- aba abb abd abi abl abs ad- ada adb add adi adl ads ai- aia aib aid aii ail ais al- ala alb ald ali all als as- asa asb asd asi asl ass baa bab bad bai bal bas bba bbb bbd bbi bbl bbs bda bdb bdd bdi bdl bds bi- bia bib bid bii bil bis bla blb bld bli bll bls bsa bsb bsd bsi bsl bss daa dab dad dai dal das dba dbb dbd dbi dbl dbs dda ddb ddd ddi ddl dds di- dia dib did dii dil dis dl- dla dlb dld dli dll dls dsa dsb dsd dsi dsl dss i-d ia- iaa iab iad iai ial ias iba ibb ibd ibi ibl ibs ida idb idd idi idl ids iia iib iid iii iil iis il- ila ilb ild ili ill ils is- isa isb isd isi isl iss la- laa lab lad lai lal las lba lbb lbd lbi lbl lbs lda ldb ldd ldi ldl lds lia lib lid lii lil lis lla llb lld lli lll lls lsa lsb lsd lsi lsl lss saa sab sad sai sal sas sba sbb sbd sbi sbl sbs sda sdb sdd sdi sdl sds sia sib sid sii sil sis sla slb sld sli sll sls ss- ssa ssb ssd ssi ssl sss