a-a a-b a-i aaa aab aad aae aai aao aas aau ab- aba abb abd abe abi abo abs abu ad- ada adb add ade adi ado ads adu aea aeb aed aee aei aeo aes aeu ai- aia aib aid aie aii aio ais aiu aoa aob aod aoe aoi aoo aos aou as- asa asb asd ase asi aso ass asu au- aua aub aud aue aui auo aus b-u baa bab bad bae bai bao bas bau bba bbb bbd bbe bbi bbo bbs bbu bda bdb bdd bde bdi bdo bds bdu be- bea beb bed bee bei beo bes beu bi- bia bib bid bie bii bio bis biu boa bob bod boe boi boo bos bou bsa bsb bsd bse bsi bso bss bsu bua bub bud bue bui buo bus buu daa dab dad dae dai dao das dau dba dbb dbd dbe dbi dbo dbs dbu dda ddb ddd dde ddi ddo dds ddu de- dea deb ded dee dei deo des deu di- dia dib did die dii dio dis diu doa dob dod doe doi doo dos dou dsa dsb dsd dse dsi dso dss dsu dua dub dud due dui duo dus eaa eab ead eae eai eao eas eau eba ebb ebd ebe ebi ebo ebs ebu ed- eda edb edd ede edi edo eds edu eea eeb eed eee eeo ees eia eib eid eie eii eio eis eiu eo- eoa eob eod eoe eoi eoo eos eou es- esa esb esd ese esi eso ess esu eu- eua eub eud eue eui eus i-d ia- iaa iab iad iae iai iao ias iau iba ibb ibd ibe ibi ibo ibs ibu ida idb idd ide idi ido ids idu ie- iea ied iee iei ies iia iib iid iie iii iio iis iiu io- ioa iob iod ioe ioi ioo ios iou is- isa isb isd ise isi iso iss isu iu- iua iub iud iue iui ius o-i oaa oab oad oae oai oao oas oau ob- oba obb obd obe obi obo obs obu oda odb odd ode odi odo ods odu oea oeb oed oee oei oeo oes oia oib oid oie oii oio ois oiu oo- ooa oob ood ooi ooo oos os- osa osb osd ose osi oso oss osu ou- oua oud oue oui ouo ous saa sab sad sae sai sao sas sau sba sbb sbd sbe sbi sbo sbs sbu sda sdb sdd sde sdi sdo sds sdu se- sea seb sed see sei seo ses seu sia sib sid sie sii sio sis siu soa sob sod soe soi soo sos sou ss- ssa ssb ssd sse ssi sso sss ssu sua sub sud sue sui suo sus suu ua- uaa uab uad uae uai uao uas uau uba ubb ube ubi ubo ubs ubu uda udb udd ude udi udo uds udu uea ueb ued uee uei ues uia uib uid uie uii uio uis uiu uoa uob uod uoe uoo uos usa usb usd use usi uso uss usu uua uue uus uuu