-ic bbb bbc bbd bbe bbf bbi bbn bbo bcb bcc bcd bce bcf bci bcn bco bdb bdc bdd bde bdf bdi bdo be- beb bec bed bee bef bei ben beo bfb bfc bfd bfe bff bfi bfn bfo bi- bib bic bid bie bif bii bin bio bnb bnc bnd bne bnf bni bnn bno bob boc bod boe bof boi bon boo c-- cbb cbc cbd cbe cbf cbi cbn cbo ccb ccc ccd cce ccf cci ccn cco cdb cdc cdd cde cdf cdi cdn cdo ce- ceb cec ced cee cef cei cen ceo cfb cfc cfd cfe cff cfi cfn cfo ci- cib cic cid cie cif cii cin cio cn- cnb cnc cnd cne cnf cni cnn cno co- cob coc cod coe cof coi con coo dbb dbc dbd dbe dbf dbi dbn dbo dcb dcc dcd dce dcf dci dcn dco ddb ddc ddd dde ddf ddi ddn ddo de- deb dec ded dee def dei den deo dfb dfc dfd dfe dff dfi dfn dfo di- dib dic did die dif dii din dio dnb dnc dnd dne dnf dni dnn dno dob doc dod doe dof doi don doo ebb ebc ebd ebe ebf ebi ebn ebo ec- ecb ecc ecd ece ecf eci ecn eco ed- edb edc edd ede edf edi edn edo eeb eec eed eee eef een eeo ef- efb efc efd efe eff efi efo eib eic eid eie eif eii ein eio en- enb enc end ene enf eni enn eno eo- eob eoc eod eoe eof eoi eon eoo fbb fbc fbd fbe fbf fbi fbn fbo fcb fcc fcd fce fcf fci fcn fco fdb fdc fdd fde fdf fdi fdn fdo feb fec fed fee fef fei fen feo ffc ffd ffe fff ffi ffn ffo fib fic fid fie fif fii fin fnb fnc fnd fne fnf fni fnn fob foc foe fof foi fon foo i-d i-f ibb ibc ibd ibe ibf ibi ibn ibo icb icc icd ice icf ici icn ico idb idc idd ide idf idi idn ido ie- iec ied iee ief iei ien ifb ifc ifd ife iff ifi ifn ifo iib iic iid iie iif iii iin iio in- inb inc ind ine inf ini inn ino io- iob ioc iod ioe iof ioi ion ioo n-i nbb nbc nbd nbe nbf nbi nbn nbo ncb ncc ncd nce ncf nci ncn nco ndb ndc ndd nde ndf ndi ndn ndo ne- neb nec ned nee nef nei nen neo nfb nfc nfd nfe nff nfi nfn nfo nib nic nid nie nif nii nin nio nnb nnc nne nnf nni nnn nno no- nob noc nod noe nof noi non noo o-i ob- obb obc obd obe obf obi obn obo oc- ocb occ ocd ocf oci ocn oco odb odc odd ode odf odi odn odo oeb oec oed oee oef oei oen oeo of- ofb ofc ofd ofe off ofi ofn ofo oib oic oid oie oif oii oin oio on- onb onc ond one onf oni onn ono oo- oob ooc ood oof ooi oon ooo