-er -ic a-a a-b a-c a-i aaa aab aac aad aae aaf aai aan aao aar ab- aba abb abc abd abe abf abi abn abo abr ac- aca acb acc acd ace acf aci acn aco acr ad- ada adb adc add ade adf adi adn ado adr aea aeb aec aed aee aef aei aen aeo aer af- afa afb afc afd afe aff afi afn afo afr ai- aia aib aic aid aie aif aii ain aio air an- ana anb anc and ane anf ani ann ano anr aoa aob aoc aod aoe aof aoi aon aoo aor ar- ara arb arc ard are arf ari arn aro arr baa bab bac bad bae baf bai ban bao bar bba bbb bbc bbd bbe bbf bbi bbn bbo bbr bca bcb bcc bcd bce bcf bci bcn bco bcr bda bdb bdc bdd bde bdf bdi bdo bdr be- bea beb bec bed bee bef bei ben beo ber bfa bfb bfc bfd bfe bff bfi bfn bfo bfr bi- bia bib bic bid bie bif bii bin bio bir bna bnb bnc bnd bne bnf bni bnn bno bnr boa bob boc bod boe bof boi bon boo bor bra brb brd bre brf bri brn bro brr c-- caa cab cac cad cae caf cai can cao car cba cbb cbc cbd cbe cbf cbi cbn cbo cbr cca ccb ccc ccd cce ccf cci ccn cco ccr cda cdb cdc cdd cde cdf cdi cdn cdo cdr ce- cea ceb cec ced cee cef cei cen ceo cer cfa cfb cfc cfd cfe cff cfi cfn cfo cfr ci- cia cib cic cid cie cif cii cin cio cir cn- cna cnb cnc cnd cne cnf cni cnn cno cnr co- coa cob coc cod coe cof coi con coo cor cra crb crc crd cre crf cri crn cro crr daa dab dac dad dae daf dai dan dao dar dba dbb dbc dbd dbe dbf dbi dbn dbo dbr dca dcb dcc dcd dce dcf dci dcn dco dcr dda ddb ddc ddd dde ddf ddi ddn ddo ddr de- dea deb dec ded dee def dei den deo der dfa dfb dfc dfd dfe dff dfi dfn dfo dfr di- dia dib dic did die dif dii din dio dir dna dnb dnc dnd dne dnf dni dnn dno dnr doa dob doc dod doe dof doi don doo dor dra drb drc drd dre dri drn dro drr eaa eab eac ead eae eaf eai ean eao ear eba ebb ebc ebd ebe ebf ebi ebn ebo ebr ec- eca ecb ecc ecd ece ecf eci ecn eco ecr ed- eda edb edc edd ede edf edi edn edo edr eea eeb eec eed eee eef een eeo eer ef- efa efb efc efd efe eff efi efo efr eia eib eic eid eie eif eii ein eio eir en- ena enb enc end ene enf eni enn eno enr eo- eoa eob eoc eod eoe eof eoi eon eoo eor era erb erc erd ere erf eri ern ero err faa fab fac fad fae faf fai fan fao far fba fbb fbc fbd fbe fbf fbi fbn fbo fbr fca fcb fcc fcd fce fcf fci fcn fco fcr fda fdb fdc fdd fde fdf fdi fdn fdo fdr fea feb fec fed fee fef fei fen feo fer ffa ffc ffd ffe fff ffi ffn ffo ffr fia fib fic fid fie fif fii fin fir fna fnb fnc fnd fne fnf fni fnn fnr foa fob foc foe fof foi fon foo for fra frb frc frd fre frf fri frn fro frr i-d i-f ia- iaa iab iac iad iae iaf iai ian iao iar iba ibb ibc ibd ibe ibf ibi ibn ibo ibr ica icb icc icd ice icf ici icn ico icr ida idb idc idd ide idf idi idn ido idr ie- iea iec ied iee ief iei ien ier ifa ifb ifc ifd ife iff ifi ifn ifo ifr iia iib iic iid iie iif iii iin iio iir in- ina inb inc ind ine inf ini inn ino inr io- ioa iob ioc iod ioe iof ioi ion ioo ior ir- ira irb irc ird ire irf iri irn iro irr n-i naa nab nac nad nae naf nai nan nao nar nba nbb nbc nbd nbe nbf nbi nbn nbo nbr nca ncb ncc ncd nce ncf nci ncn nco ncr nda ndb ndc ndd nde ndf ndi ndn ndo ndr ne- nea neb nec ned nee nef nei nen neo ner nfa nfb nfc nfd nfe nff nfi nfn nfo nfr nia nib nic nid nie nif nii nin nio nir nna nnb nnc nne nnf nni nnn nno no- noa nob noc nod noe nof noi non noo nor nra nrb nrc nrd nre nrf nri nrn nro nrr o-i oaa oab oac oad oae oaf oai oan oao oar ob- oba obb obc obd obe obf obi obn obo obr oc- oca ocb occ ocd ocf oci ocn oco ocr oda odb odc odd ode odf odi odn odo odr oea oeb oec oed oee oef oei oen oeo oer of- ofa ofb ofc ofd ofe off ofi ofn ofo ofr oia oib oic oid oie oif oii oin oio oir on- ona onb onc ond one onf oni onn ono onr oo- ooa oob ooc ood oof ooi oon ooo oor or- ora orb orc ord ore orf ori orn oro orr ra- raa rab rac rad rae raf rai ran rao rar rba rbb rbc rbd rbe rbf rbi rbn rbo rbr rca rcb rcc rcd rce rcf rci rcn rco rcr rda rdb rdc rdd rde rdf rdi rdn rdo rdr re- rea reb rec red ree ref rei ren reo rer rfa rfb rfc rfd rfe rff rfi rfn rfo rfr ria rib ric rid rie rif rii rin rio