-er -ic bbb bbc bbd bbe bbf bbi bbo bbr bcb bcc bcd bce bcf bci bco bcr bdb bdc bdd bde bdf bdi bdo bdr be- beb bec bed bee bef bei beo ber bfb bfc bfd bfe bff bfi bfo bfr bi- bib bic bid bie bif bii bio bir bob boc bod boe bof boi boo bor brb brd bre brf bri bro brr c-- cbb cbc cbd cbe cbf cbi cbo cbr ccb ccc ccd cce ccf cci cco ccr cdb cdc cdd cde cdf cdi cdo cdr ce- ceb cec ced cee cef cei ceo cer cfb cfc cfd cfe cff cfi cfo cfr ci- cib cic cid cie cif cii cio cir co- cob coc cod coe cof coi coo cor crb crc crd cre crf cri cro crr dbb dbc dbd dbe dbf dbi dbo dbr dcb dcc dcd dce dcf dci dco dcr ddb ddc ddd dde ddf ddi ddo ddr de- deb dec ded dee def dei deo der dfb dfc dfd dfe dff dfi dfo dfr di- dib dic did die dif dii dio dir dob doc dod doe dof doi doo dor drb drc drd dre dri dro drr ebb ebc ebd ebe ebf ebi ebo ebr ec- ecb ecc ecd ece ecf eci eco ecr ed- edb edc edd ede edf edi edo edr eeb eec eed eee eef eeo eer ef- efb efc efd efe eff efi efo efr eib eic eid eie eif eii eio eir eo- eob eoc eod eoe eof eoi eoo eor erb erc erd ere erf eri ero err fbb fbc fbd fbe fbf fbi fbo fbr fcb fcc fcd fce fcf fci fco fcr fdb fdc fdd fde fdf fdi fdo fdr feb fec fed fee fef fei feo fer ffc ffd ffe fff ffi ffo ffr fib fic fid fie fif fii fir fob foc foe fof foi foo for frb frc frd fre frf fri fro frr i-d i-f ibb ibc ibd ibe ibf ibi ibo ibr icb icc icd ice icf ici ico icr idb idc idd ide idf idi ido idr ie- iec ied iee ief iei ier ifb ifc ifd ife iff ifi ifo ifr iib iic iid iie iif iii iio iir io- iob ioc iod ioe iof ioi ioo ior ir- irb irc ird ire irf iri iro irr o-i ob- obb obc obd obe obf obi obo obr oc- ocb occ ocd ocf oci oco ocr odb odc odd ode odf odi odo odr oeb oec oed oee oef oei oeo oer of- ofb ofc ofd ofe off ofi ofo ofr oib oic oid oie oif oii oio oir oo- oob ooc ood oof ooi ooo oor or- orb orc ord ore orf ori oro orr rbb rbc rbd rbe rbf rbi rbo rbr rcb rcc rcd rce rcf rci rco rcr rdb rdc rdd rde rdf rdi rdo rdr re- reb rec red ree ref rei reo rer rfb rfc rfd rfe rff rfi rfo rfr rib ric rid rie rif rii rio rir rob roc rod roe rof roi roo ror rrb rrc rrd rrf rri rrr