-er a-a a-b a-c aaa aab aac aad aae aah aar aaw ab- aba abb abc abd abe abh abr abw ac- aca acb acc acd ace ach acr acw ad- ada adb adc add ade adh adr adw aea aeb aec aed aee aeh aer aew aha ahb ahc ahd ahe ahh ahr ahw ar- ara arb arc ard are arh arr arw aw- awa awb awc awd awe awh awr aww baa bab bac bad bae bah bar baw bba bbb bbc bbd bbe bbh bbr bbw bca bcb bcc bcd bce bch bcr bda bdb bdc bdd bde bdh bdr bdw be- bea beb bec bed bee beh ber bew bha bhb bhc bhd bhe bhh bhr bhw bra brb brd bre brh brr brw bwa bwb bwc bwd bwh bwr c-- caa cab cac cad cae cah car caw cba cbb cbc cbd cbe cbh cbr cbw cca ccb ccc ccd cce cch ccr ccw cda cdb cdc cdd cde cdh cdr cdw ce- cea ceb cec ced cee ceh cer cew ch- cha chb chc chd che chh chr chw cra crb crc crd cre crh crr crw cw- cwa cwb cwc cwd cwe cwh cwr daa dab dac dad dae dah dar daw dba dbb dbc dbd dbe dbh dbr dca dcb dcc dcd dce dcr dcw dda ddb ddc ddd dde ddh ddr ddw de- dea deb dec ded dee deh der dew dh- dha dhb dhc dhd dhe dhh dhr dhw dra drb drc drd dre drr drw dwa dwb dwc dwe dwh dwr dww eaa eab eac ead eae eah ear eaw eba ebb ebc ebd ebe ebh ebr ebw ec- eca ecb ecc ecd ece ech ecr ecw ed- eda edb edc edd ede edh edr edw eea eeb eec eed eee eer eew eha ehb ehc ehd ehe ehh ehr era erb erc erd ere erh err erw ewa ewb ewc ewd ewe ewr eww haa hab hac had hae hah har haw hba hbb hbc hbd hbe hbh hbr hbw hca hcb hcc hcd hce hch hcr hcw hda hdb hdc hdd hde hdh hdr hdw he- hea heb hec hed hee heh her hew hha hhb hhc hhd hhe hhh hhr hhw hr- hra hrb hrc hrd hre hrh hrr hrw hw- hwa hwb hwd hwe hwr hww ra- raa rab rac rad rae rah rar raw rba rbb rbc rbd rbe rbh rbr rbw rca rcb rcc rcd rce rch rcr rcw rda rdb rdc rdd rde rdh rdr re- rea reb rec red ree reh rer rew rh- rha rhb rhc rhd rhe rhh rhr rra rrb rrc rrd rrh rrr rwa rwb rwc rwd rwe rwh rwr waa wab wac wad wae wah war waw wba wbb wbc wbd wbe wbr wbw wca wcb wcc wcd wce wch wcr wcw wda wdb wdc wdr wea web wec wed wee weh wer wew wh- wha whb whc whd whh whr whw wr- wra wrc wrd wre wrh wrr wrw wwa wwc wwd wwe www