-ic a-a a-b a-c a-i aaa aab aac aad aai aan aas aau ab- aba abb abc abd abi abn abs abu ac- aca acb acc acd aci acn acs acu ad- ada adb adc add adi adn ads adu ai- aia aib aic aid aii ain ais aiu an- ana anb anc and ani ann ans anu as- asa asb asc asd asi asn ass asu au- aua aub auc aud aui aun aus b-u baa bab bac bad bai ban bas bau bba bbb bbc bbd bbi bbn bbs bbu bca bcb bcc bcd bci bcn bcs bcu bda bdb bdc bdd bdi bds bdu bi- bia bib bic bid bii bin bis biu bna bnb bnc bnd bni bnn bns bnu bsa bsb bsc bsd bsi bsn bss bsu bua bub buc bud bui bun bus buu c-- caa cab cac cad cai can cas cau cba cbb cbc cbd cbi cbn cbs cbu cca ccb ccc ccd cci ccn ccs ccu cda cdb cdc cdd cdi cdn cds cdu ci- cia cib cic cid cii cin cis ciu cn- cna cnb cnc cnd cni cnn cns cnu csa csb csc csd csi csn css csu cua cub cuc cud cui cun cus cuu daa dab dac dad dai dan das dau dba dbb dbc dbd dbi dbn dbs dbu dca dcb dcc dcd dci dcn dcs dcu dda ddb ddc ddd ddi ddn dds ddu di- dia dib dic did dii din dis diu dna dnb dnc dnd dni dnn dns dsa dsb dsc dsd dsi dsn dss dsu dua dub duc dud dui dun dus i-d ia- iaa iab iac iad iai ian ias iau iba ibb ibc ibd ibi ibn ibs ibu ica icb icc icd ici icn ics icu ida idb idc idd idi idn ids idu iia iib iic iid iii iin iis iiu in- ina inb inc ind ini inn ins inu is- isa isb isc isd isi isn iss isu iu- iua iub iuc iud iui ius n-i naa nab nac nad nai nan nas nau nba nbb nbc nbd nbi nbn nbs nbu nca ncb ncc ncd nci ncn ncs ncu nda ndb ndc ndd ndi ndn nds ndu nia nib nic nid nii nin nis niu nna nnb nnc nni nnn nns nnu nsa nsb nsc nsd nsi nsn nss nsu nua nub nuc nud nui nun nus nuu saa sab sac sad sai san sas sau sba sbb sbc sbd sbi sbn sbs sbu sca scb scc scd sci scn scs scu sda sdb sdc sdd sdi sdn sds sdu sia sib sic sid sii sin sis siu sna snb snc snd sni snn sns snu ss- ssa ssb ssc ssd ssi ssn sss ssu sua sub suc sud sui sun sus suu ua- uaa uab uac uad uai uan uas uau uba ubb ubc ubi ubn ubs ubu uca ucb ucc ucd uci ucn ucs ucu uda udb udc udd udi udn uds udu uia uib uic uid uii uin uis uiu un- una unb unc und uni unn uns unu usa usb usc usd usi usn uss usu uua uuc uun uus uuu