-ic b-u bbb bbc bbi bbm bbo bbs bbu bcb bcc bci bcm bco bcs bcu bi- bib bic bii bim bio bis biu bmb bmc bmi bmm bmo bms bmu bob boc boi bom boo bos bou bsb bsc bsi bsm bso bss bsu bub buc bui bum buo bus buu c-- cbb cbc cbi cbm cbo cbs cbu ccb ccc cci ccm cco ccs ccu ci- cib cic cii cim cio cis ciu cmb cmc cmi cmm cmo cms cmu co- cob coc coi com coo cos cou csb csc csi csm cso css csu cub cuc cui cum cuo cus cuu ibb ibc ibi ibm ibo ibs ibu icb icc ici icm ico ics icu iib iic iii iim iio iis iiu im- imb imc imi imm imo ims imu io- iob ioc ioi iom ioo ios iou is- isb isc isi ism iso iss isu iu- iub iuc iui ium ius m-o mbb mbc mbi mbm mbo mbs mbu mc- mcb mcc mci mcm mco mcs mcu mi- mib mic mii mim mio mis miu mmb mmc mmi mmm mmo mms mmu mob moc moi mom moo mos mou msb msc msi msm mso mss msu mub muc mui mum mus muu o-i ob- obb obc obi obm obo obs obu oc- ocb occ oci ocm oco ocs ocu oib oic oii oim oio ois oiu om- omb omc omi omm omo oms omu oo- oob ooc ooi oom ooo oos os- osb osc osi osm oso oss osu ou- ouc oui oum ouo ous sbb sbc sbi sbm sbo sbs sbu scb scc sci scm sco scs scu sib sic sii sim sio sis siu smb smc smi smm smo sms smu sob soc soi som soo sos sou ss- ssb ssc ssi ssm sso sss ssu sub suc sui sum suo sus suu ubb ubc ubi ubo ubs ubu ucb ucc uci ucm uco ucs ucu uib uic uii uim uio uis uiu um- umb umc umi umm umo ums umu uob uoc uom uoo uos usb usc usi usm uso uss usu uuc uum uus uuu