b-u bbb bbd bbi bbm bbo bbs bbt bbu bdb bdd bdi bdm bdo bds bdt bdu bi- bib bid bii bim bio bis bit biu bmb bmd bmi bmm bmo bms bmt bmu bob bod boi bom boo bos bot bou bsb bsd bsi bsm bso bss bst bsu btb btd bti btm bto bts btt btu bub bud bui bum buo bus but buu dbb dbd dbi dbm dbo dbs dbt dbu ddb ddd ddi ddm ddo dds ddt ddu di- dib did dii dim dio dis dit diu dmb dmd dmi dmm dmo dms dmt dmu dob dod doi dom doo dos dot dou dsb dsd dsi dsm dso dss dst dsu dtb dtd dti dtm dto dts dtt dtu dub dud dui dum duo dus dut i-d ibb ibd ibi ibm ibo ibs ibt ibu idb idd idi idm ido ids idt idu iib iid iii iim iio iis iit iiu im- imb imd imi imm imo ims imt imu io- iob iod ioi iom ioo ios iot iou is- isb isd isi ism iso iss ist isu itb itd iti itm ito its itt itu iu- iub iud iui ium ius iut m-o mbb mbd mbi mbm mbo mbs mbt mbu mdb mdd mdi mdm mdo mds mdt mdu mi- mib mid mii mim mio mis mit miu mmb mmd mmi mmm mmo mms mmt mmu mob mod moi mom moo mos mot mou msb msd msi msm mso mss mst msu mtb mtd mti mtm mto mts mtt mtu mub mud mui mum mus mut muu o-i ob- obb obd obi obm obo obs obt obu odb odd odi odm odo ods odt odu oib oid oii oim oio ois oit oiu om- omb omd omi omm omo oms omt omu oo- oob ood ooi oom ooo oos oot os- osb osd osi osm oso oss ost osu ot- otb otd oti otm oto ots ott otu ou- oud oui oum ouo ous out sbb sbd sbi sbm sbo sbs sbt sbu sdb sdd sdi sdm sdo sds sdt sdu sib sid sii sim sio sis sit siu smb smd smi smm smo sms smt smu sob sod soi som soo sos sot sou ss- ssb ssd ssi ssm sso sss sst ssu stb std sti stm sto sts stt stu sub sud sui sum suo sus sut suu tbb tbd tbi tbm tbo tbs tbt tbu tdb tdd tdi tdm tdo tds tdt tdu tib tid tii tim tio tis tit tiu tmb tmd tmi tmm tmo tms tmt tmu to- tob tod toi tom too tos tot tou tsb tsd tsi tsm tso tss tst tsu ttb ttd tti ttm tto tts ttt ttu tub tud tui tum tuo tus tut tuu ubb ubi ubo ubs ubt ubu udb udd udi udm udo uds udt udu uib uid uii uim uio uis uit uiu um- umb umd umi umm umo ums umt umu uob uod uom uoo uos uot usb usd usi usm uso uss ust usu utb utd uti utm uto uts utt utu uum uus uut uuu