b-p bbb bbd bbi bbk bbp bbs bdb bdd bdi bdk bdp bds bi- bib bid bii bik bip bis bkb bkk bkp bks bpb bpd bpi bpp bps bsb bsd bsi bsk bsp bss dbb dbd dbi dbk dbp dbs ddb ddd ddi ddk ddp dds di- dib did dii dik dip dis dkb dki dkk dkp dks dpb dpd dpi dpk dpp dps dsb dsd dsi dsk dsp dss i-d ibb ibd ibi ibk ibp ibs idb idd idi idk idp ids iib iid iii iip iis ikb iki ikk iks ipb ipd ipi ipp ips is- isb isd isi isk isp iss kbb kbd kbi kbk kbp kbs kdb kdk kdp kds kib kid kii kik kip kis kkb kki kkk kkp kks kpd kpi kpk kpp kps ksb ksd ksi ksk ksp kss p-p pbb pbd pbi pbk pbp pbs pdb pdd pdi pdk pdp pds pib pid pii pik pip pis pkb pkd pki pkp pks ppb ppd ppi ppk ppp pps ps- psb psd psi psk psp pss sbb sbd sbi sbk sbp sbs sdb sdd sdi sdk sdp sds sib sid sii sik sip sis sk- skb skd ski skk skp sks spb spd spi spk spp sps ss- ssb ssd ssi ssk ssp sss