a-a a-b a-c aaa aab aac aad aae aah aao aaw ab- aba abb abc abd abe abh abo abw ac- aca acb acc acd ace ach aco acw ad- ada adb adc add ade adh ado adw aea aeb aec aed aee aeh aeo aew aha ahb ahc ahd ahe ahh aho ahw aoa aob aoc aod aoe aoh aoo aow aw- awa awb awc awd awe awh awo aww baa bab bac bad bae bah bao baw bba bbb bbc bbd bbe bbh bbo bbw bca bcb bcc bcd bce bch bco bda bdb bdc bdd bde bdh bdo bdw be- bea beb bec bed bee beh beo bew bha bhb bhc bhd bhe bhh bho bhw boa bob boc bod boe boh boo bow bwa bwb bwc bwd bwh bwo c-- caa cab cac cad cae cah cao caw cba cbb cbc cbd cbe cbh cbo cbw cca ccb ccc ccd cce cch cco ccw cda cdb cdc cdd cde cdh cdo cdw ce- cea ceb cec ced cee ceh ceo cew ch- cha chb chc chd che chh cho chw co- coa cob coc cod coe coh coo cow cw- cwa cwb cwc cwd cwe cwh cwo daa dab dac dad dae dah dao daw dba dbb dbc dbd dbe dbh dbo dca dcb dcc dcd dce dco dcw dda ddb ddc ddd dde ddh ddo ddw de- dea deb dec ded dee deh deo dew dh- dha dhb dhc dhd dhe dhh dho dhw doa dob doc dod doe doh doo dow dwa dwb dwc dwe dwh dwo dww eaa eab eac ead eae eah eao eaw eba ebb ebc ebd ebe ebh ebo ebw ec- eca ecb ecc ecd ece ech eco ecw ed- eda edb edc edd ede edh edo edw eea eeb eec eed eee eeo eew eha ehb ehc ehd ehe ehh eho eo- eoa eob eoc eod eoe eoh eoo eow ewa ewb ewc ewd ewe ewo eww haa hab hac had hae hah hao haw hba hbb hbc hbd hbe hbh hbo hbw hca hcb hcc hcd hce hch hco hcw hda hdb hdc hdd hde hdh hdo hdw he- hea heb hec hed hee heh heo hew hha hhb hhc hhd hhe hhh hho hhw hoa hob hoc hod hoe hoh hoo how hw- hwa hwb hwd hwe hwo hww oaa oab oac oad oae oah oao oaw ob- oba obb obc obd obe obh obo obw oc- oca ocb occ ocd och oco ocw oda odb odc odd ode odh odo oea oeb oec oed oee oeh oeo oha ohc ohd ohe ohh oho oo- ooa oob ooc ood ooh ooo oow owa owb owc owd owe owh owo oww waa wab wac wad wae wah wao waw wba wbb wbc wbd wbe wbo wbw wca wcb wcc wcd wce wch wco wcw wda wdb wdc wea web wec wed wee weh weo wew wh- wha whb whc whd whh who whw woa wob woc wod woe woh woo wow wwa wwc wwd wwe wwo www