-ic bbb bbc bbi bbn bbo bbr bbs bcb bcc bci bcn bco bcr bcs bcv bi- bib bic bii bin bio bir bis biv bnb bnc bni bnn bno bnr bns bnv bob boc boi bon boo bor bos bov brb bri brn bro brr brs brv bsb bsc bsi bsn bso bsr bss bsv bvb bvc bvi bvn bvo bvr bvs bvv c-- cbb cbc cbi cbn cbo cbr cbs cbv ccb ccc cci ccn cco ccr ccs ccv ci- cib cic cii cin cio cir cis civ cn- cnb cnc cni cnn cno cnr cns cnv co- cob coc coi con coo cor cos cov crb crc cri crn cro crr crs crv csb csc csi csn cso csr css csv cvb cvc cvi cvn cvo cvr cvs cvv i-v ibb ibc ibi ibn ibo ibr ibs ibv icb icc ici icn ico icr ics icv iib iic iii iin iio iir iis in- inb inc ini inn ino inr ins inv io- iob ioc ioi ion ioo ior ios iov ir- irb irc iri irn iro irr irs irv is- isb isc isi isn iso isr iss isv ivb ivc ivi ivo ivr ivs ivv n-i nbb nbc nbi nbn nbo nbr nbs nbv ncb ncc nci ncn nco ncr ncs ncv nib nic nii nin nio nir nis niv nnb nnc nni nnn nno nns nnv no- nob noc noi non noo nor nos nov nrb nrc nri nrn nro nrr nrs nrv nsb nsc nsi nsn nso nsr nss nsv nvb nvc nvi nvn nvv o-i ob- obb obc obi obn obo obr obs obv oc- ocb occ oci ocn oco ocr ocs ocv oib oic oii oin oio oir ois oiv on- onb onc oni onn ono onr ons oo- oob ooc ooi oon ooo oor oos oov or- orb orc ori orn oro orr ors orv os- osb osc osi osn oso osr oss osv ov- ovb ovc ovi ovo ovs ovv rbb rbc rbi rbn rbo rbr rbs rcb rcc rci rcn rco rcr rcs rcv rib ric rii rin rio rir ris riv rnb rnc rni rnn rno rnr rns rnv rob roc roi ron roo ror ros rov rrb rrc rri rrn rrr rrs rsb rsc rsi rsn rso rsr rss rsv rvb rvc rvi rvn rvo rvr rvs rvv sbb sbc sbi sbn sbo sbr sbs sbv scb scc sci scn sco scr scs scv sib sic sii sin sio sir sis siv snb snc sni snn sno snr sns snv sob soc soi son soo sor sos sov sr- srb src sri srn sro srr srs srv ss- ssb ssc ssi ssn sso ssr sss ssv svb svc svi svn svo svr svs svv vbc vbi vbo vbr vbs vbv vcc vci vcn vco vcr vcs vi- vib vic vii vin vio vir vis viv vn- vni vno vnr vns vnv vob voc voi von voo vor vos vov vrb vrc vri vrn vrr vrs vsb vsc vsi vsn vso vsr vss vsv vvb vvc vvi vvo vvr vvs vvv