-er -ic bbb bbc bbe bbf bbh bbi bbo bbr bcb bcc bce bcf bch bci bco bcr be- beb bec bee bef beh bei beo ber bfb bfc bfe bff bfh bfi bfo bfr bhb bhc bhe bhf bhh bhi bho bhr bi- bib bic bie bif bih bii bio bir bob boc boe bof boh boi boo bor brb bre brf brh bri bro brr c-- cbb cbc cbe cbf cbh cbi cbo cbr ccb ccc cce ccf cch cci cco ccr ce- ceb cec cee cef ceh cei ceo cer cfb cfc cfe cff cfh cfi cfo cfr ch- chb chc che chf chh chi cho chr ci- cib cic cie cif cih cii cio cir co- cob coc coe cof coh coi coo cor crb crc cre crf crh cri cro crr ebb ebc ebe ebf ebh ebi ebo ebr ec- ecb ecc ece ecf ech eci eco ecr eeb eec eee eef eeo eer ef- efb efc efe eff efh efi efo efr ehb ehc ehe ehf ehh ehi eho ehr eib eic eie eif eii eio eir eo- eob eoc eoe eof eoh eoi eoo eor erb erc ere erf erh eri ero err fbb fbc fbe fbf fbh fbi fbo fbr fcb fcc fce fcf fci fco fcr feb fec fee fef feh fei feo fer ffc ffe fff ffh ffi ffo ffr fhb fhc fhe fhf fhh fhi fho fhr fib fic fie fif fih fii fir fob foc foe fof foh foi foo for frb frc fre frf frh fri fro frr h-i hbb hbc hbe hbf hbh hbi hbo hbr hcb hcc hce hcf hch hci hco hcr he- heb hec hee hef heh hei heo her hfb hfc hfe hff hfh hfi hfo hfr hhb hhc hhe hhf hhh hhi hho hhr hib hic hie hif hih hii hio hir hob hoc hoe hof hoh hoi hoo hor hr- hrb hrc hre hrf hrh hri hro hrr i-f ibb ibc ibe ibf ibh ibi ibo ibr icb icc ice icf ich ici ico icr ie- iec iee ief iei ier ifb ifc ife iff ifi ifo ifr ihb ihc ihe ihf ihh ihi iho ihr iib iic iie iif iih iii iio iir io- iob ioc ioe iof ioh ioi ioo ior ir- irb irc ire irf iri iro irr o-i ob- obb obc obe obf obh obi obo obr oc- ocb occ ocf och oci oco ocr oeb oec oee oef oeh oei oeo oer of- ofb ofc ofe off ofi ofo ofr ohc ohe ohf ohh ohi oho ohr oib oic oie oif oii oio oir oo- oob ooc oof ooh ooi ooo oor or- orb orc ore orf orh ori oro orr rbb rbc rbe rbf rbh rbi rbo rbr rcb rcc rce rcf rch rci rco rcr re- reb rec ree ref reh rei reo rer rfb rfc rfe rff rfh rfi rfo rfr rh- rhb rhc rhe rhf rhh rhi rho rhr rib ric rie rif rih rii rio rir rob roc roe rof roh roi roo ror rrb rrc rrf rrh rri rrr