-er a-a a-b aaa aab aad aae aah aao aar aaw ab- aba abb abd abe abh abo abr abw ad- ada adb add ade adh ado adr adw aea aeb aed aee aeh aeo aer aew aha ahb ahd ahe ahh aho ahr ahw aoa aob aod aoe aoh aoo aor aow ar- ara arb ard are arh aro arr arw aw- awa awb awd awe awh awo awr aww baa bab bad bae bah bao bar baw bba bbb bbd bbe bbh bbo bbr bbw bda bdb bdd bde bdh bdo bdr bdw be- bea beb bed bee beh beo ber bew bha bhb bhd bhe bhh bho bhr bhw boa bob bod boe boh boo bor bow bra brb brd bre brh bro brr brw bwa bwb bwd bwh bwo bwr daa dab dad dae dah dao dar daw dba dbb dbd dbe dbh dbo dbr dda ddb ddd dde ddh ddo ddr ddw de- dea deb ded dee deh deo der dew dh- dha dhb dhd dhe dhh dho dhr dhw doa dob dod doe doh doo dor dow dra drb drd dre dro drr drw dwa dwb dwe dwh dwo dwr dww eaa eab ead eae eah eao ear eaw eba ebb ebd ebe ebh ebo ebr ebw ed- eda edb edd ede edh edo edr edw eea eeb eed eee eeo eer eew eha ehb ehd ehe ehh eho ehr eo- eoa eob eod eoe eoh eoo eor eow era erb erd ere erh ero err erw ewa ewb ewd ewe ewo ewr eww haa hab had hae hah hao har haw hba hbb hbd hbe hbh hbo hbr hbw hda hdb hdd hde hdh hdo hdr hdw he- hea heb hed hee heh heo her hew hha hhb hhd hhe hhh hho hhr hhw hoa hob hod hoe hoh hoo hor how hr- hra hrb hrd hre hrh hro hrr hrw hw- hwa hwb hwd hwe hwo hwr hww oaa oab oad oae oah oao oar oaw ob- oba obb obd obe obh obo obr obw oda odb odd ode odh odo odr oea oeb oed oee oeh oeo oer oha ohd ohe ohh oho ohr oo- ooa oob ood ooh ooo oor oow or- ora orb ord ore orh oro orr owa owb owd owe owh owo oww ra- raa rab rad rae rah rao rar raw rba rbb rbd rbe rbh rbo rbr rbw rda rdb rdd rde rdh rdo rdr re- rea reb red ree reh reo rer rew rh- rha rhb rhd rhe rhh rho rhr roa rob rod roe roh roo ror row rra rrb rrd rrh rrr rwa rwb rwd rwe rwh rwr waa wab wad wae wah wao war waw wba wbb wbd wbe wbo wbr wbw wda wdb wdr wea web wed wee weh weo wer wew wh- wha whb whd whh who whr whw woa wob wod woe woh woo wor wow wr- wra wrd wre wrh wro wrr wrw wwa wwd wwe wwo www