-ic bbb bbc bbi bbm bbn bbo bbr bbt bcb bcc bci bcm bcn bco bcr bct bi- bib bic bii bim bin bio bir bit bmb bmc bmi bmm bmn bmo bmr bmt bnb bnc bni bnn bno bnr bnt bob boc boi bom bon boo bor bot brb bri brm brn bro brr brt btb btc bti btm btn bto btr btt c-- cbb cbc cbi cbm cbn cbo cbr cbt ccb ccc cci ccm ccn cco ccr cct ci- cib cic cii cim cin cio cir cit cmb cmc cmi cmm cmn cmo cmr cmt cn- cnb cnc cni cnm cnn cno cnr cnt co- cob coc coi com con coo cor cot crb crc cri crm crn cro crr crt ctb ctc cti ctm ctn cto ctr ctt ibb ibc ibi ibm ibn ibo ibr ibt icb icc ici icm icn ico icr ict iib iic iii iim iin iio iir iit im- imb imc imi imm imn imo imt in- inb inc ini inm inn ino inr int io- iob ioc ioi iom ion ioo ior iot ir- irb irc iri irm irn iro irr irt itb itc iti itm itn ito itt m-o m-r mbb mbc mbi mbm mbo mbr mbt mc- mcb mcc mci mcm mcn mco mcr mct mi- mib mic mii mim min mio mir mit mmb mmc mmi mmm mmn mmo mmr mmt mnb mnc mni mnm mnn mno mnr mnt mob moc moi mom mon moo mor mot mrb mrc mri mrm mrn mro mrr mrt mtb mtc mti mtm mtn mto mtr mtt n-i nbb nbc nbi nbm nbn nbo nbr nbt ncb ncc nci ncm ncn nco ncr nct nib nic nii nim nin nio nir nit nmb nmc nmi nmm nmn nmo nmr nmt nnb nnc nni nnm nnn nno nnt no- nob noc noi nom non noo nor not nrb nrc nri nrm nrn nro nrr nrt ntb ntc nti ntm ntn nto ntr ntt o-i ob- obb obc obi obm obn obo obr obt oc- ocb occ oci ocm ocn oco ocr oct oib oic oii oim oin oio oir oit om- omb omc omi omm omn omo omr omt on- onb onc oni onn ono onr ont oo- oob ooc ooi oom oon ooo oor oot or- orb orc ori orm orn oro orr ort ot- otb otc oti otm otn oto otr ott rbb rbc rbi rbm rbn rbo rbr rbt rcb rcc rci rcm rcn rco rcr rct rib ric rii rim rin rio rir rit rmb rmc rmi rmm rmn rmo rmr rmt rnb rnc rni rnm rnn rno rnr rnt rob roc roi rom ron roo ror rot rrb rrc rri rrm rrn rrr rrt rtb rtc rti rtm rtn rto rtr rtt tbb tbc tbi tbm tbn tbo tbr tbt tcb tcc tci tcm tcn tco tcr tct tib tic tii tim tin tio tir tit tmb tmc tmi tmm tmn tmo tmr tmt tnb tnc tni tnm tnn tno tnr tnt to- tob toc toi tom ton too tor tot trb trc tri trm trn tro trr trt ttb ttc tti ttm ttn tto ttr ttt