bbb bbd bbi bbk bbs bbt bdb bdd bdi bdk bds bdt bi- bib bid bii bik bis bit bkb bkk bks bkt bsb bsd bsi bsk bss bst btb btd bti btk bts btt dbb dbd dbi dbk dbs dbt ddb ddd ddi ddk dds ddt di- dib did dii dik dis dit dkb dki dkk dks dkt dsb dsd dsi dsk dss dst dtb dtd dti dtk dts dtt i-d ibb ibd ibi ibk ibs ibt idb idd idi idk ids idt iib iid iii iis iit ikb iki ikk iks ikt is- isb isd isi isk iss ist itb itd iti itk its itt k-t kbb kbd kbi kbk kbs kdb kdk kds kdt kib kid kii kik kis kit kkb kki kkk kks kkt ksb ksd ksi ksk kss kst ktb ktk kts ktt sbb sbd sbi sbk sbs sbt sdb sdd sdi sdk sds sdt sib sid sii sik sis sit sk- skb skd ski skk sks skt ss- ssb ssd ssi ssk sss sst stb std sti stk sts stt tbb tbd tbi tbk tbs tbt tdb tdd tdi tdk tds tdt tib tid tii tik tis tit tkb tkk tks tkt tsb tsd tsi tsk tss tst ttb ttd tti ttk tts ttt