-er a-a a-b a-c aaa aab aac aae aag aak aar aaw ab- aba abb abc abe abg abk abr abw ac- aca acb acc ace acg ack acr acw aea aeb aec aee aeg aek aer aew ag- aga agb agc age agg agk agr agw aka akb akc ake akg akk akr akw ar- ara arb arc are arg ark arr arw aw- awa awb awc awe awg awk awr aww baa bab bac bae bag bak bar baw bba bbb bbc bbe bbg bbk bbr bbw bca bcb bcc bce bcg bck bcr be- bea beb bec bee beg bek ber bew bga bgb bgc bge bgg bgk bgr bgw bka bkb bkc bke bkg bkk bkr bkw bra brb bre brg brk brr brw bwa bwb bwc bwg bwk bwr c-- caa cab cac cae cag cak car caw cba cbb cbc cbe cbg cbk cbr cbw cca ccb ccc cce ccg cck ccr ccw ce- cea ceb cec cee ceg cek cer cew cga cgb cgc cge cgg cgr cgw cka ckb ckc ckw cra crb crc cre crg crk crr crw cw- cwa cwb cwc cwe cwg cwk cwr eaa eab eac eae eag eak ear eaw eba ebb ebc ebe ebg ebk ebr ebw ec- eca ecb ecc ece ecg eck ecr ecw eea eeb eec eee eeg eek eer eew ega egb egc ege egg egr egw eka ekb ekc eke ekg ekr era erb erc ere erg erk err erw ewa ewb ewc ewe ewk ewr eww gaa gab gac gae gag gak gar gaw gba gbc gbe gbg gbk gbr gbw gca gcb gcc gce gcg gck gcr gcw ge- gea geb gec gee geg gek ger gew gga ggb ggc ggg ggr ggw gka gkb gra grb grc gre grg grk grr grw gwa gwb gwc gwe gwg gwk gwr ka- kaa kab kac kae kag kak kar kaw kba kbb kbc kbe kbk kbr kbw kca kcb kcc kce kcg kck kcr ke- kea keb kec kee keg kek ker kew kga kgb kgc kgw kkb kkc kke kkk kkr kra krc krg krk krr krw kw- kwa kwc kwg kwk kww ra- raa rab rac rae rag rak rar raw rba rbb rbc rbe rbg rbk rbr rbw rca rcb rcc rce rcg rcr rcw re- rea reb rec ree reg rek rer rew rga rgb rgc rge rgg rgk rgr rgw rkb rkc rke rkg rkk rra rrb rrc rrg rrk rrr rwa rwb rwc rwe rwr waa wab wac wae wag wak war waw wba wbb wbc wbe wbg wbr wbw wca wcb wcc wce wcg wck wcr wcw wea web wec wee weg wek wer wew wga wgb wgc wgr wgw wka wkb wkc wke wkg wkr wkw wr- wra wrc wre wrg wrk wrr wrw wwa wwc wwe www