-ic bbb bbc bbh bbi bbn bbo bbs bcb bcc bch bci bcn bco bcs bhb bhc bhh bhi bho bhs bi- bib bic bih bii bin bio bis bnb bnc bni bnn bno bns bob boc boh boi bon boo bos bsb bsc bsh bsi bsn bso bss c-- cbb cbc cbh cbi cbn cbo cbs ccb ccc cch cci ccn cco ccs ch- chb chc chh chi chn cho chs ci- cib cic cih cii cin cio cis cn- cnb cnc cnh cni cnn cno cns co- cob coc coh coi con coo cos csb csc csh csi csn cso css h-i hbb hbc hbh hbi hbn hbo hbs hcb hcc hch hci hcn hco hcs hhb hhc hhh hhi hhn hho hhs hib hic hih hii hin hio his hnb hnc hnh hnn hno hns hob hoc hoh hoi hon hoo hos hsb hsc hsh hsi hsn hss ibb ibc ibh ibi ibn ibo ibs icb icc ich ici icn ico ics ihb ihc ihh ihi ihn iho ihs iib iic iih iii iin iio iis in- inb inc inh ini inn ino ins io- iob ioc ioh ioi ion ioo ios is- isb isc ish isi isn iso iss n-i nbb nbc nbi nbn nbo nbs ncb ncc nch nci ncn nco ncs nhb nhc nhh nhi nhn nhs nib nic nih nii nin nio nis nnb nnc nnh nni nnn nno nns no- nob noc noh noi non noo nos nsb nsc nsh nsi nsn nso nss o-i ob- obb obc obh obi obn obo obs oc- ocb occ och oci ocn oco ocs ohc ohh ohi ohn oho ohs oib oic oii oin oio ois on- onb onc onh oni onn ono ons oo- oob ooc ooh ooi oon ooo oos os- osb osc osh osi osn oso oss sbb sbc sbh sbi sbn sbo sbs scb scc sch sci scn sco scs sh- shb shc shh shi shn sho shs sib sic sih sii sin sio sis snb snc sni snn sno sns sob soc soh soi son soo sos ss- ssb ssc ssh ssi ssn sso sss