b-u bbb bbd bbi bbo bbs bbu bdb bdd bdi bdo bds bdu bdv bi- bib bid bii bio bis biu biv bob bod boi boo bos bou bov bsb bsd bsi bso bss bsu bsv bub bud bui buo bus buu bvb bvd bvi bvo bvs bvu bvv dbb dbd dbi dbo dbs dbu dbv ddb ddd ddi ddo dds ddu di- dib did dii dio dis diu div dob dod doi doo dos dou dov dsb dsd dsi dso dss dsu dsv dub dud dui duo dus duv dvb dvd dvi dvs dvu i-d i-v ibb ibd ibi ibo ibs ibu ibv idb idd idi ido ids idu idv iib iid iii iio iis iiu io- iob iod ioi ioo ios iou iov is- isb isd isi iso iss isu isv iu- iub iud iui ius ivb ivd ivi ivo ivs ivu ivv o-i ob- obb obd obi obo obs obu obv odb odd odi odo ods odu odv oib oid oii oio ois oiu oiv oo- oob ood ooi ooo oos oov os- osb osd osi oso oss osu osv ou- oud oui ouo ous ov- ovb ovd ovi ovo ovs ovv sbb sbd sbi sbo sbs sbu sbv sdb sdd sdi sdo sds sdu sdv sib sid sii sio sis siu siv sob sod soi soo sos sou sov ss- ssb ssd ssi sso sss ssu ssv sub sud sui suo sus suu suv svb svd svi svo svs svu svv ubb ubi ubo ubs ubu ubv udb udd udi udo uds udu udv uib uid uii uio uis uiu uob uod uoo uos usb usd usi uso uss usu usv uus uuu uvb uvo uvs uvu uvv vbd vbi vbo vbs vbv vdb vdd vdi vdo vds vdu vdv vi- vib vid vii vio vis viu viv vob vod voi voo vos vou vov vsb vsd vsi vso vss vsu vsv vus vuv vvb vvi vvo vvs vvv