a-a a-b a-i a-t aaa aab aad aae aai aao aat aav ab- aba abb abd abe abi abo abt abv ad- ada adb add ade adi ado adt adv aea aeb aed aee aei aeo aet aev ai- aia aib aid aie aii aio ait aiv aoa aob aod aoe aoi aoo aot aov at- ata atb atd ate ati ato att atv av- ava avb avd ave avi avo avt baa bab bad bae bai bao bat bav bba bbb bbd bbe bbi bbo bbt bda bdb bdd bde bdi bdo bdt bdv be- bea beb bed bee bei beo bet bev bi- bia bib bid bie bii bio bit biv boa bob bod boe boi boo bot bov bta btb btd bte bti bto btt btv bva bvb bvd bve bvi bvo bvt bvv daa dab dad dae dai dao dat dav dba dbb dbd dbe dbi dbo dbt dbv dda ddb ddd dde ddi ddo ddt de- dea deb ded dee dei deo det dev di- dia dib did die dii dio dit div doa dob dod doe doi doo dot dov dta dtb dtd dte dti dto dtt dtv dva dvb dvd dve dvi dvt eaa eab ead eae eai eao eat eav eba ebb ebd ebe ebi ebo ebt ebv ed- eda edb edd ede edi edo edt eea eeb eed eee eeo eet eev eia eib eid eie eii eio eit eiv eo- eoa eob eod eoe eoi eoo eot eta etb etd ete eti eto ett etv eva evb evd eve evi evo evt evv i-d i-v ia- iaa iab iad iae iai iao iat iav iba ibb ibd ibe ibi ibo ibt ibv ida idb idd ide idi ido idt idv ie- iea ied iee iei iet iev iia iib iid iie iii iio iit io- ioa iob iod ioe ioi ioo iot iov ita itb itd ite iti ito itt itv iva ivb ivd ive ivi ivo ivt ivv o-i oaa oab oad oae oai oao oat oav ob- oba obb obd obe obi obo obt obv oda odb odd ode odi odo odt odv oea oeb oed oee oei oeo oet oia oib oid oie oii oio oit oiv oo- ooa oob ood ooi ooo oot oov ot- ota otb otd ote oti oto ott otv ov- ova ovb ovd ove ovi ovo ovv taa tab tad tae tai tao tat tav tba tbb tbd tbe tbi tbo tbt tbv tda tdb tdd tde tdi tdo tdt tdv te- tea teb ted tee tei teo tet tev tia tib tid tie tii tio tit tiv to- toa tob tod toe toi too tot tov tta ttb ttd tte tti tto ttt ttv tva tvb tvd tve tvi tvo tvt v-a v-e vaa vab vad vae vai vao vat vav vba vbd vbi vbo vbv vdb vdd vde vdi vdo vdt vdv vea veb ved vee vei veo vet vi- via vib vid vie vii vio vit viv voa vob vod voe voi voo vot vov vta vtb vte vti vto vtt vtv vva vvb vvi vvo vvt vvv