-ic bbb bbc bbh bbi bbn bbo bbr bbs bcb bcc bch bci bcn bco bcr bcs bhb bhc bhh bhi bho bhr bhs bi- bib bic bih bii bin bio bir bis bnb bnc bni bnn bno bnr bns bob boc boh boi bon boo bor bos brb brh bri brn bro brr brs bsb bsc bsh bsi bsn bso bsr bss c-- cbb cbc cbh cbi cbn cbo cbr cbs ccb ccc cch cci ccn cco ccr ccs ch- chb chc chh chi chn cho chr chs ci- cib cic cih cii cin cio cir cis cn- cnb cnc cnh cni cnn cno cnr cns co- cob coc coh coi con coo cor cos crb crc crh cri crn cro crr crs csb csc csh csi csn cso csr css h-i hbb hbc hbh hbi hbn hbo hbr hbs hcb hcc hch hci hcn hco hcr hcs hhb hhc hhh hhi hhn hho hhr hhs hib hic hih hii hin hio hir his hnb hnc hnh hnn hno hns hob hoc hoh hoi hon hoo hor hos hr- hrb hrc hrh hri hrn hro hrr hrs hsb hsc hsh hsi hsn hsr hss ibb ibc ibh ibi ibn ibo ibr ibs icb icc ich ici icn ico icr ics ihb ihc ihh ihi ihn iho ihr ihs iib iic iih iii iin iio iir iis in- inb inc inh ini inn ino inr ins io- iob ioc ioh ioi ion ioo ior ios ir- irb irc iri irn iro irr irs is- isb isc ish isi isn iso isr iss n-i nbb nbc nbi nbn nbo nbr nbs ncb ncc nch nci ncn nco ncr ncs nhb nhc nhh nhi nhn nhr nhs nib nic nih nii nin nio nir nis nnb nnc nnh nni nnn nno nns no- nob noc noh noi non noo nor nos nrb nrc nri nrn nro nrr nrs nsb nsc nsh nsi nsn nso nsr nss o-i ob- obb obc obh obi obn obo obr obs oc- ocb occ och oci ocn oco ocr ocs ohc ohh ohi ohn oho ohr ohs oib oic oii oin oio oir ois on- onb onc onh oni onn ono onr ons oo- oob ooc ooh ooi oon ooo oor oos or- orb orc orh ori orn oro orr ors os- osb osc osh osi osn oso osr oss rbb rbc rbh rbi rbn rbo rbr rbs rcb rcc rch rci rcn rco rcr rcs rh- rhb rhc rhh rhi rhn rho rhr rhs rib ric rih rii rin rio rir ris rnb rnc rnh rni rnn rno rnr rns rob roc roh roi ron roo ror ros rrb rrc rrh rri rrn rrr rrs rsb rsc rsh rsi rsn rso rsr rss sbb sbc sbh sbi sbn sbo sbr sbs scb scc sch sci scn sco scr scs sh- shb shc shh shi shn sho shr shs sib sic sih sii sin sio sir sis snb snc sni snn sno snr sns sob soc soh soi son soo sor sos sr- srb src srh sri srn sro srr srs ss- ssb ssc ssh ssi ssn sso ssr sss