-ic a-a a-b a-c a-i aaa aab aac aad aai aan aao aar aau ab- aba abb abc abd abi abn abo abr abu ac- aca acb acc acd aci acn aco acr acu ad- ada adb adc add adi adn ado adr adu ai- aia aib aic aid aii ain aio air aiu an- ana anb anc and ani ann ano anr anu aoa aob aoc aod aoi aon aoo aor aou ar- ara arb arc ard ari arn aro arr aru au- aua aub auc aud aui aun auo aur b-u baa bab bac bad bai ban bao bar bau bba bbb bbc bbd bbi bbn bbo bbr bbu bca bcb bcc bcd bci bcn bco bcr bcu bda bdb bdc bdd bdi bdo bdr bdu bi- bia bib bic bid bii bin bio bir biu bna bnb bnc bnd bni bnn bno bnr bnu boa bob boc bod boi bon boo bor bou bra brb brd bri brn bro brr bru bua bub buc bud bui bun buo bur buu c-- caa cab cac cad cai can cao car cau cba cbb cbc cbd cbi cbn cbo cbr cbu cca ccb ccc ccd cci ccn cco ccr ccu cda cdb cdc cdd cdi cdn cdo cdr cdu ci- cia cib cic cid cii cin cio cir ciu cn- cna cnb cnc cnd cni cnn cno cnr cnu co- coa cob coc cod coi con coo cor cou cra crb crc crd cri crn cro crr cru cua cub cuc cud cui cun cuo cur cuu daa dab dac dad dai dan dao dar dau dba dbb dbc dbd dbi dbn dbo dbr dbu dca dcb dcc dcd dci dcn dco dcr dcu dda ddb ddc ddd ddi ddn ddo ddr ddu di- dia dib dic did dii din dio dir diu dna dnb dnc dnd dni dnn dno dnr doa dob doc dod doi don doo dor dou dra drb drc drd dri drn dro drr dru dua dub duc dud dui dun duo dur i-d ia- iaa iab iac iad iai ian iao iar iau iba ibb ibc ibd ibi ibn ibo ibr ibu ica icb icc icd ici icn ico icr icu ida idb idc idd idi idn ido idr idu iia iib iic iid iii iin iio iir iiu in- ina inb inc ind ini inn ino inr inu io- ioa iob ioc iod ioi ion ioo ior iou ir- ira irb irc ird iri irn iro irr iru iu- iua iub iuc iud iui iur n-i naa nab nac nad nai nan nao nar nau nba nbb nbc nbd nbi nbn nbo nbr nbu nca ncb ncc ncd nci ncn nco ncr ncu nda ndb ndc ndd ndi ndn ndo ndr ndu nia nib nic nid nii nin nio nir niu nna nnb nnc nni nnn nno nnu no- noa nob noc nod noi non noo nor nou nra nrb nrc nrd nri nrn nro nrr nru nua nub nuc nud nui nun nuo nur nuu o-i oaa oab oac oad oai oan oao oar oau ob- oba obb obc obd obi obn obo obr obu oc- oca ocb occ ocd oci ocn oco ocr ocu oda odb odc odd odi odn odo odr odu oia oib oic oid oii oin oio oir oiu on- ona onb onc ond oni onn ono onr onu oo- ooa oob ooc ood ooi oon ooo oor or- ora orb orc ord ori orn oro orr oru ou- oua ouc oud oui oun ouo our ra- raa rab rac rad rai ran rao rar rau rba rbb rbc rbd rbi rbn rbo rbr rbu rca rcb rcc rcd rci rcn rco rcr rcu rda rdb rdc rdd rdi rdn rdo rdr rdu ria rib ric rid rii rin rio rir rna rnb rnc rnd rni rnn rno rnr rnu roa rob roc rod roi ron roo ror rou rra rrb rrc rrd rri rrn rrr rru rua rub ruc rud rui run ruo rur ruu ua- uaa uab uac uad uai uan uao uar uau uba ubb ubc ubi ubn ubo ubr ubu uca ucb ucc ucd uci ucn uco ucr ucu uda udb udc udd udi udn udo udr udu uia uib uic uid uii uin uio uir uiu un- una unb unc und uni unn uno unr unu uoa uob uoc uod uon uoo uor ur- ura urb urc urd uri urn uro urr uru uua uuc uun uur uuu