-er -ic bbb bbc bbd bbe bbf bbi bbo bbr bbx bcb bcc bcd bce bcf bci bco bcr bcx bdb bdc bdd bde bdf bdi bdo bdr bdx be- beb bec bed bee bef bei beo ber bex bfb bfc bfd bfe bff bfi bfo bfr bfx bi- bib bic bid bie bif bii bio bir bix bob boc bod boe bof boi boo bor box brb brd bre brf bri bro brr brx bxb bxd bxi bxo bxx c-- cbb cbc cbd cbe cbf cbi cbo cbr cbx ccb ccc ccd cce ccf cci cco ccr ccx cdb cdc cdd cde cdf cdi cdo cdr cdx ce- ceb cec ced cee cef cei ceo cer cex cfb cfc cfd cfe cff cfi cfo cfr cfx ci- cib cic cid cie cif cii cio cir cix co- cob coc cod coe cof coi coo cor cox crb crc crd cre crf cri cro crr crx cxc cxf cxi cxo cxr cxx dbb dbc dbd dbe dbf dbi dbo dbr dbx dcb dcc dcd dce dcf dci dco dcr dcx ddb ddc ddd dde ddf ddi ddo ddr ddx de- deb dec ded dee def dei deo der dex dfb dfc dfd dfe dff dfi dfo dfr dfx di- dib dic did die dif dii dio dir dix dob doc dod doe dof doi doo dor dox drb drc drd dre dri dro drr drx dxc dxd dxi dxo dxr dxx ebb ebc ebd ebe ebf ebi ebo ebr ebx ec- ecb ecc ecd ece ecf eci eco ecr ecx ed- edb edc edd ede edf edi edo edr edx eeb eec eed eee eef eeo eer eex ef- efb efc efd efe eff efi efo efr efx eib eic eid eie eif eii eio eir eix eo- eob eoc eod eoe eof eoi eoo eor erb erc erd ere erf eri ero err ex- exc exd exe exi exo exr exx fbb fbc fbd fbe fbf fbi fbo fbr fbx fcb fcc fcd fce fcf fci fco fcr fcx fdb fdc fdd fde fdf fdi fdo fdr fdx feb fec fed fee fef fei feo fer fex ffc ffd ffe fff ffi ffo ffr ffx fib fic fid fie fif fii fir fix fob foc foe fof foi foo for fox frb frc frd fre frf fri fro frr fxe fxi fxr fxx i-d i-f ibb ibc ibd ibe ibf ibi ibo ibr ibx icb icc icd ice icf ici ico icr idb idc idd ide idf idi ido idr idx ie- iec ied iee ief iei ier iex ifb ifc ifd ife iff ifi ifo ifr ifx iib iic iid iie iif iii iio iir iix io- iob ioc iod ioe iof ioi ioo ior ir- irb irc ird ire irf iri iro irr irx ixc ixe ixi o-i ob- obb obc obd obe obf obi obo obr obx oc- ocb occ ocd ocf oci oco ocr ocx odb odc odd ode odf odi odo odr oeb oec oed oee oef oei oeo oer oex of- ofb ofc ofd ofe off ofi ofo ofr ofx oib oic oid oie oif oii oio oir oo- oob ooc ood oof ooi ooo oor oox or- orb orc ord ore orf ori oro orr orx ox- oxb oxc oxf oxi oxo oxx rbb rbc rbd rbe rbf rbi rbo rbr rbx rcb rcc rcd rce rcf rci rco rcr rcx rdb rdc rdd rde rdf rdi rdo rdr rdx re- reb rec red ree ref rei reo rer rex rfb rfc rfd rfe rff rfi rfo rfr rib ric rid rie rif rii rio rir rix rob roc rod roe rof roi roo ror rox rrb rrc rrd rrf rri rrr rxr xbc xbe xbr xbx xcb xcd xcf xci xcr xcx xdb xdc xde xdf xdi xdr xed xee xer xex xfe xfx xic xie xii xio xix xoc xod xof xoi xoo xor xox xrc xrd xrf xrx xxi xxo xxx