bbb bbi bbm bbn bbo bbs bi- bib bii bim bin bio bis bmb bmi bmm bmn bmo bms bnb bni bnn bno bns bob boi bom bon boo bos bsb bsi bsm bsn bso bss ibb ibi ibm ibn ibo ibs iib iii iim iin iio iis im- imb imi imm imn imo ims in- inb ini inm inn ino ins io- iob ioi iom ion ioo ios is- isb isi ism isn iso iss m-o mbb mbi mbm mbo mbs mi- mib mii mim min mio mis mmb mmi mmm mmn mmo mms mnb mni mnm mnn mno mns mob moi mom mon moo mos msb msi msm msn mso mss n-i nbb nbi nbm nbn nbo nbs nib nii nim nin nio nis nmb nmi nmm nmn nmo nms nnb nni nnm nnn nno nns no- nob noi nom non noo nos nsb nsi nsm nsn nso nss o-i ob- obb obi obm obn obo obs oib oii oim oin oio ois om- omb omi omm omn omo oms on- onb oni onn ono ons oo- oob ooi oom oon ooo oos os- osb osi osm osn oso oss sbb sbi sbm sbn sbo sbs sib sii sim sin sio sis smb smi smm smn smo sms snb sni snm snn sno sns sob soi som son soo sos ss- ssb ssi ssm ssn sso sss