a-a a-b aaa aab aad aae aak aao aaw ab- aba abb abd abe abk abo abw ad- ada adb add ade adk ado adw aea aeb aed aee aek aeo aew aka akb akd ake akk ako akw aoa aob aod aoe aok aoo aow aw- awa awb awd awe awk awo aww baa bab bad bae bak bao baw bba bbb bbd bbe bbk bbo bbw bda bdb bdd bde bdk bdo bdw be- bea beb bed bee bek beo bew bka bkb bke bkk bko bkw boa bob bod boe bok boo bow bwa bwb bwd bwk bwo daa dab dad dae dak dao daw dba dbb dbd dbe dbk dbo dda ddb ddd dde ddk ddo ddw de- dea deb ded dee dek deo dew dka dkb dke dkk dko dkw doa dob dod doe dok doo dow dwa dwb dwe dwo dww eaa eab ead eae eak eao eaw eba ebb ebd ebe ebk ebo ebw ed- eda edb edd ede edk edo edw eea eeb eed eee eek eeo eew eka ekb ekd eke eko eo- eoa eob eod eoe eok eoo eow ewa ewb ewd ewe ewk ewo eww ka- kaa kab kad kae kak kao kaw kba kbb kbd kbe kbk kbo kbw kda kdb kde kdk kdo ke- kea keb ked kee kek keo kew kkb kke kkk koa kob kod koe kok koo kow kw- kwa kwd kwk kwo kww oaa oab oad oae oak oao oaw ob- oba obb obd obe obk obo obw oda odb odd ode odo oea oeb oed oee oeo oka okb okd oke okk oko okw oo- ooa oob ood ook ooo oow owa owb owd owe owk owo oww waa wab wad wae wak wao waw wba wbb wbd wbe wbo wbw wda wdb wea web wed wee wek weo wew wka wkb wkd wke wko wkw woa wob wod woe wok woo wow wwa wwd wwe wwo www