Common typos: helaacdselaacdshlaacdsheaacdshelacdshelaadshelaacahelaacddhelaacdwhelaacdzhelaacdxhelaacdehelaacdsjelaacdsgelaacdsyelaacdsnelaacdsbelaacdsuelaacdshwlaacdshrlaacdsh3laacdshdlaacdshslaacdsh4laacdshekaacdsheoaacdshepaacdshelsacdshelqacdshelzacdshelwacdshelascdshelaqcdshelazcdshelawcdshelaaxdshelaavdshelaaddshelaafdshelaacsshelaacfshelaaceshelaacxshelaaccshelaacrhselaacdsehlaacdshleaacdshealacdshelacadshelaadcashelaacdsahelaacddshelaacdsdhelaacdwshelaacdswhelaacdzshelaacdszhelaacdxshelaacdsxhelaacdeshelaacdsehelaacdsjhelaacdshjelaacdsghelaacdshgelaacdsyhelaacdshyelaacdsnhelaacdshnelaacdsbhelaacdshbelaacdsuhelaacdshuelaacdshwelaacdshewlaacdshrelaacdsherlaacdsh3elaacdshe3laacdshdelaacdshedlaacdshselaacdsheslaacdsh4elaacdshe4laacdsheklaacdshelkaacdsheolaacdsheloaacdsheplaacdshelpaacdshelsaacdshelasacdshelqaacdshelaqacdshelzaacdshelazacdshelwaacdshelawacdshelaascdshelaaqcdshelaazcdshelaawcdshelaaxcdshelaacxdshelaavcdshelaacvdshelaadcdshelaacddshelaafcdshelaacfdshelaacsdshelaacdsshelaacdfshelaacedshelaacdeshelaacdxshelaaccdshelaacdcshelaacrdshelaacdrsshelaacdshhelaacdsheelaacdshellaacdshelaaacd