-ic b-u bbb bbc bbi bbm bbs bbu bcb bcc bci bcm bcs bcu bi- bib bic bii bim bis biu bmb bmc bmi bmm bms bmu bsb bsc bsi bsm bss bsu bub buc bui bum bus buu c-- cbb cbc cbi cbm cbs cbu ccb ccc cci ccm ccs ccu ci- cib cic cii cim cis ciu cmb cmc cmi cmm cms cmu csb csc csi csm css csu cub cuc cui cum cus cuu ibb ibc ibi ibm ibs ibu icb icc ici icm ics icu iib iic iii iim iis iiu im- imb imc imi imm ims imu is- isb isc isi ism iss isu iu- iub iuc iui ium ius mbb mbc mbi mbm mbs mbu mc- mcb mcc mci mcm mcs mcu mi- mib mic mii mim mis miu mmb mmc mmi mmm mms mmu msb msc msi msm mss msu mub muc mui mum mus muu sbb sbc sbi sbm sbs sbu scb scc sci scm scs scu sib sic sii sim sis siu smb smc smi smm sms smu ss- ssb ssc ssi ssm sss ssu sub suc sui sum sus suu ubb ubc ubi ubs ubu ucb ucc uci ucm ucs ucu uib uic uii uim uis uiu um- umb umc umi umm ums umu usb usc usi usm uss usu uuc uum uus uuu