-ic bbb bbc bbg bbh bbi bbn bbo bbr bcb bcc bcg bch bci bcn bco bcr bgb bgc bgg bgh bgi bgn bgo bgr bhb bhc bhg bhh bhi bho bhr bi- bib bic big bih bii bin bio bir bnb bnc bng bni bnn bno bnr bob boc bog boh boi bon boo bor brb brg brh bri brn bro brr c-- cbb cbc cbg cbh cbi cbn cbo cbr ccb ccc ccg cch cci ccn cco ccr cgb cgc cgg cgh cgi cgn cgo cgr ch- chb chc chg chh chi chn cho chr ci- cib cic cig cih cii cin cio cir cn- cnb cnc cng cnh cni cnn cno cnr co- cob coc cog coh coi con coo cor crb crc crg crh cri crn cro crr gbc gbg gbh gbi gbn gbo gbr gcb gcc gcg gch gci gcn gco gcr ggb ggc ggg ggh ggi ggn ggo ggr ghb ghc ghg ghh ghi ghn gho ghr gib gic gig gih gii gin gio gir gnb gnc gni gnn gno gnr gob goc gog goh goi gon goo gor grb grc grg grh gri grn gro grr h-i hbb hbc hbg hbh hbi hbn hbo hbr hcb hcc hcg hch hci hcn hco hcr hgb hgc hgg hgh hgi hgn hgo hgr hhb hhc hhg hhh hhi hhn hho hhr hib hic hig hih hii hin hio hir hnb hnc hng hnh hnn hno hob hoc hog hoh hoi hon hoo hor hr- hrb hrc hrg hrh hri hrn hro hrr ibb ibc ibg ibh ibi ibn ibo ibr icb icc icg ich ici icn ico icr igb igc igg igh igi ign igo igr ihb ihc ihg ihh ihi ihn iho ihr iib iic iih iii iin iio iir in- inb inc ing inh ini inn ino inr io- iob ioc iog ioh ioi ion ioo ior ir- irb irc irg iri irn iro irr n-i nbb nbc nbg nbi nbn nbo nbr ncb ncc ncg nch nci ncn nco ncr ngb ngc ngg ngh ngi ngn ngo nhb nhc nhg nhh nhi nhn nhr nib nic nig nih nii nin nio nir nnb nnc nng nnh nni nnn nno no- nob noc nog noh noi non noo nor nrb nrc nrg nri nrn nro nrr o-i ob- obb obc obg obh obi obn obo obr oc- ocb occ ocg och oci ocn oco ocr ogc ogg ogh ogi ogn ogo ohc ohg ohh ohi ohn oho ohr oib oic oii oin oio oir on- onb onc ong onh oni onn ono onr oo- oob ooc oog ooh ooi oon ooo oor or- orb orc org orh ori orn oro orr rbb rbc rbg rbh rbi rbn rbo rbr rcb rcc rcg rch rci rcn rco rcr rgb rgc rgg rgh rgi rgn rgo rgr rh- rhb rhc rhg rhh rhi rhn rho rhr rib ric rig rih rii rin rio rir rnb rnc rng rnh rni rnn rno rnr rob roc rog roh roi ron roo ror rrb rrc rrg rrh rri rrn rrr