-er -ic a-a a-b a-c a-i aaa aab aac aad aae aai aan aao aar aau ab- aba abb abc abd abe abi abn abo abr abu ac- aca acb acc acd ace aci acn aco acr acu ad- ada adb adc add ade adi adn ado adr adu aea aeb aec aed aee aei aen aeo aer aeu ai- aia aib aic aid aie aii ain aio air aiu an- ana anb anc and ane ani ann ano anr anu aoa aob aoc aod aoe aoi aon aoo aor aou ar- ara arb arc ard are ari arn aro arr aru au- aua aub auc aud aue aui aun auo aur b-u baa bab bac bad bae bai ban bao bar bau bba bbb bbc bbd bbe bbi bbn bbo bbr bbu bca bcb bcc bcd bce bci bcn bco bcr bcu bda bdb bdc bdd bde bdi bdo bdr bdu be- bea beb bec bed bee bei ben beo ber beu bi- bia bib bic bid bie bii bin bio bir biu bna bnb bnc bnd bne bni bnn bno bnr bnu boa bob boc bod boe boi bon boo bor bou bra brb brd bre bri brn bro brr bru bua bub buc bud bue bui bun buo bur buu c-- caa cab cac cad cae cai can cao car cau cba cbb cbc cbd cbe cbi cbn cbo cbr cbu cca ccb ccc ccd cce cci ccn cco ccr ccu cda cdb cdc cdd cde cdi cdn cdo cdr cdu ce- cea ceb cec ced cee cei cen ceo cer ceu ci- cia cib cic cid cie cii cin cio cir ciu cn- cna cnb cnc cnd cne cni cnn cno cnr cnu co- coa cob coc cod coe coi con coo cor cou cra crb crc crd cre cri crn cro crr cru cua cub cuc cud cue cui cun cuo cur cuu daa dab dac dad dae dai dan dao dar dau dba dbb dbc dbd dbe dbi dbn dbo dbr dbu dca dcb dcc dcd dce dci dcn dco dcr dcu dda ddb ddc ddd dde ddi ddn ddo ddr ddu de- dea deb dec ded dee dei den deo der deu di- dia dib dic did die dii din dio dir diu dna dnb dnc dnd dne dni dnn dno dnr doa dob doc dod doe doi don doo dor dou dra drb drc drd dre dri drn dro drr dru dua dub duc dud due dui dun duo dur eaa eab eac ead eae eai ean eao ear eau eba ebb ebc ebd ebe ebi ebn ebo ebr ebu ec- eca ecb ecc ecd ece eci ecn eco ecr ecu ed- eda edb edc edd ede edi edn edo edr edu eea eeb eec eed eee een eeo eer eia eib eic eid eie eii ein eio eir eiu en- ena enb enc end ene eni enn eno enr enu eo- eoa eob eoc eod eoe eoi eon eoo eor eou era erb erc erd ere eri ern ero err eru eu- eua eub euc eud eue eui eun eur i-d ia- iaa iab iac iad iae iai ian iao iar iau iba ibb ibc ibd ibe ibi ibn ibo ibr ibu ica icb icc icd ice ici icn ico icr icu ida idb idc idd ide idi idn ido idr idu ie- iea iec ied iee iei ien ier iia iib iic iid iie iii iin iio iir iiu in- ina inb inc ind ine ini inn ino inr inu io- ioa iob ioc iod ioe ioi ion ioo ior iou ir- ira irb irc ird ire iri irn iro irr iru iu- iua iub iuc iud iue iui iur n-i naa nab nac nad nae nai nan nao nar nau nba nbb nbc nbd nbe nbi nbn nbo nbr nbu nca ncb ncc ncd nce nci ncn nco ncr ncu nda ndb ndc ndd nde ndi ndn ndo ndr ndu ne- nea neb nec ned nee nei nen neo ner neu nia nib nic nid nie nii nin nio nir niu nna nnb nnc nne nni nnn nno nnu no- noa nob noc nod noe noi non noo nor nou nra nrb nrc nrd nre nri nrn nro nrr nru nua nub nuc nud nue nui nun nuo nur nuu o-i oaa oab oac oad oae oai oan oao oar oau ob- oba obb obc obd obe obi obn obo obr obu oc- oca ocb occ ocd oci ocn oco ocr ocu oda odb odc odd ode odi odn odo odr odu oea oeb oec oed oee oei oen oeo oer oia oib oic oid oie oii oin oio oir oiu on- ona onb onc ond one oni onn ono onr onu oo- ooa oob ooc ood ooi oon ooo oor or- ora orb orc ord ore ori orn oro orr oru ou- oua ouc oud oue oui oun ouo our ra- raa rab rac rad rae rai ran rao rar rau rba rbb rbc rbd rbe rbi rbn rbo rbr rbu rca rcb rcc rcd rce rci rcn rco rcr rcu rda rdb rdc rdd rde rdi rdn rdo rdr rdu re- rea reb rec red ree rei ren reo rer reu ria rib ric rid rie rii rin rio rir rna rnb rnc rnd rni rnn rno rnr rnu roa rob roc rod roe roi ron roo ror rou rra rrb rrc rrd rri rrn rrr rru rua rub ruc rud rue rui run ruo rur ruu ua- uaa uab uac uad uae uai uan uao uar uau uba ubb ubc ube ubi ubn ubo ubr ubu uca ucb ucc ucd uce uci ucn uco ucr ucu uda udb udc udd ude udi udn udo udr udu uea ueb uec ued uee uei uen uer uia uib uic uid uie uii uin uio uir uiu un- una unb unc und une uni unn uno unr unu uoa uob uoc uod uoe uon uoo uor ur- ura urb