-ic bbb bbc bbd bbi bbm bbo bbr bcb bcc bcd bci bcm bco bcr bdb bdc bdd bdi bdm bdo bdr bi- bib bic bid bii bim bio bir bmb bmc bmd bmi bmm bmo bmr bob boc bod boi bom boo bor brb brd bri brm bro brr c-- cbb cbc cbd cbi cbm cbo cbr ccb ccc ccd cci ccm cco ccr cdb cdc cdd cdi cdm cdo cdr ci- cib cic cid cii cim cio cir cmb cmc cmd cmi cmm cmo cmr co- cob coc cod coi com coo cor crb crc crd cri crm cro crr dbb dbc dbd dbi dbm dbo dbr dcb dcc dcd dci dcm dco dcr ddb ddc ddd ddi ddm ddo ddr di- dib dic did dii dim dio dir dmb dmc dmd dmi dmm dmo dmr dob doc dod doi dom doo dor drb drc drd dri drm dro drr i-d ibb ibc ibd ibi ibm ibo ibr icb icc icd ici icm ico icr idb idc idd idi idm ido idr iib iic iid iii iim iio iir im- imb imc imd imi imm imo io- iob ioc iod ioi iom ioo ior ir- irb irc ird iri irm iro irr m-o m-r mbb mbc mbd mbi mbm mbo mbr mc- mcb mcc mcd mci mcm mco mcr mdb mdc mdd mdi mdm mdo mdr mi- mib mic mid mii mim mio mir mmb mmc mmd mmi mmm mmo mmr mob moc mod moi mom moo mor mrb mrc mrd mri mrm mro mrr o-i ob- obb obc obd obi obm obo obr oc- ocb occ ocd oci ocm oco ocr odb odc odd odi odm odo odr oib oic oid oii oim oio oir om- omb omc omd omi omm omo omr oo- oob ooc ood ooi oom ooo oor or- orb orc ord ori orm oro orr rbb rbc rbd rbi rbm rbo rbr rcb rcc rcd rci rcm rco rcr rdb rdc rdd rdi rdm rdo rdr rib ric rid rii rim rio rir rmb rmc rmd rmi rmm rmo rmr rob roc rod roi rom roo ror rrb rrc rrd rri rrm rrr