-er a-a a-b a-c aaa aab aac aad aae aah aak aar aaw ab- aba abb abc abd abe abh abk abr abw ac- aca acb acc acd ace ach ack acr acw ad- ada adb adc add ade adh adk adr adw aea aeb aec aed aee aeh aek aer aew aha ahb ahc ahd ahe ahh ahk ahr ahw aka akb akc akd ake akh akk akr akw ar- ara arb arc ard are arh ark arr arw aw- awa awb awc awd awe awh awk awr aww baa bab bac bad bae bah bak bar baw bba bbb bbc bbd bbe bbh bbk bbr bbw bca bcb bcc bcd bce bch bck bcr bda bdb bdc bdd bde bdh bdk bdr bdw be- bea beb bec bed bee beh bek ber bew bha bhb bhc bhd bhe bhh bhk bhr bhw bka bkb bkc bke bkk bkr bkw bra brb brd bre brh brk brr brw bwa bwb bwc bwd bwh bwk bwr c-- caa cab cac cad cae cah cak car caw cba cbb cbc cbd cbe cbh cbk cbr cbw cca ccb ccc ccd cce cch cck ccr ccw cda cdb cdc cdd cde cdh cdk cdr cdw ce- cea ceb cec ced cee ceh cek cer cew ch- cha chb chc chd che chh chk chr chw cka ckb ckc ckd ckh ckw cra crb crc crd cre crh crk crr crw cw- cwa cwb cwc cwd cwe cwh cwk cwr daa dab dac dad dae dah dak dar daw dba dbb dbc dbd dbe dbh dbk dbr dca dcb dcc dcd dce dck dcr dcw dda ddb ddc ddd dde ddh ddk ddr ddw de- dea deb dec ded dee deh dek der dew dh- dha dhb dhc dhd dhe dhh dhk dhr dhw dka dkb dkc dke dkk dkr dkw dra drb drc drd dre drk drr drw dwa dwb dwc dwe dwh dwr dww eaa eab eac ead eae eah eak ear eaw eba ebb ebc ebd ebe ebh ebk ebr ebw ec- eca ecb ecc ecd ece ech eck ecr ecw ed- eda edb edc edd ede edh edk edr edw eea eeb eec eed eee eek eer eew eha ehb ehc ehd ehe ehh ehr eka ekb ekc ekd eke ekh ekr era erb erc erd ere erh erk err erw ewa ewb ewc ewd ewe ewk ewr eww haa hab hac had hae hah hak har haw hba hbb hbc hbd hbe hbh hbk hbr hbw hca hcb hcc hcd hce hch hck hcr hcw hda hdb hdc hdd hde hdh hdk hdr hdw he- hea heb hec hed hee heh hek her hew hha hhb hhc hhd hhe hhh hhk hhr hhw hka hkb hkd hkh hkk hkr hkw hr- hra hrb hrc hrd hre hrh hrk hrr hrw hw- hwa hwb hwd hwe hwk hwr hww ka- kaa kab kac kad kae kah kak kar kaw kba kbb kbc kbd kbe kbh kbk kbr kbw kca kcb kcc kcd kce kch kck kcr kda kdb kdc kde kdh kdk kdr ke- kea keb kec ked kee keh kek ker kew kha khe khh khk khr kkb kkc kke kkh kkk kkr kra krc krd krk krr krw kw- kwa kwc kwd kwh kwk kww ra- raa rab rac rad rae rah rak rar raw rba rbb rbc rbd rbe rbh rbk rbr rbw rca rcb rcc rcd rce rch rcr rcw rda rdb rdc rdd rde rdh rdr re- rea reb rec red ree reh rek rer rew rh- rha rhb rhc rhd rhe rhh rhr rkb rkc rke rkk rra rrb rrc rrd rrh rrk rrr rwa rwb rwc rwd rwe rwh rwr waa wab wac wad wae wah wak war waw wba wbb wbc wbd wbe wbr wbw wca wcb wcc wcd wce wch wck wcr wcw wda wdb wdc wdr wea web wec wed wee weh wek wer wew wh- wha whb whc whd whh whk whr whw wka wkb wkc wkd wke wkr wkw wr- wra wrc wrd wre wrh wrk wrr wrw wwa wwc wwd wwe www