Common typos: ffdsdfddfdsdfddffsdfddffddfddffdsfddffdsdddffdsdfsffdsdfdfffdsdfdeffdsdfdxffdsdfdcffdsdfdrffdsdfdddfdsdfddgfdsdfddrfdsdfddcfdsdfddvfdsdfddtfdsdfddfddsdfddfgdsdfddfrdsdfddfcdsdfddfvdsdfddftdsdfddffssdfddfffsdfddffesdfddffxsdfddffcsdfddffrsdfddffdadfddffdddfddffdwdfddffdzdfddffdxdfddffdedfddffdssfddffdsffddffdsefddffdsxfddffdscfddffdsrfddffdsddddffdsdgddffdsdrddffdsdcddffdsdvddffdsdtddffdsdfsdffdsdffdffdsdfedffdsdfxdffdsdfcdffdsdfrfdfdsdfddfdfsdfddffsddfddffddsfddffdsfdddffdsddfsdffdsdfddsffdsdfdfdffdsdfddfffdsdfdedffdsdfddeffdsdfdxdffdsdfddxffdsdfdcdffdsdfddcffdsdfdrdffdsdfddrffdsdfdddffdsdfddfdfdsdfddgffdsdfddfgfdsdfddfrfdsdfddfcfdsdfddvffdsdfddfvfdsdfddtffdsdfddftfdsdfddffddsdfddffgdsdfddffrdsdfddffcdsdfddffvdsdfddfftdsdfddffsdsdfddffdssdfddffdfsdfddffedsdfddffdesdfddffxdsdfddffdxsdfddffdcsdfddffdrsdfddffdasdfddffdsadfddffdsddfddffdwsdfddffdswdfddffdzsdfddffdszdfddffdsxdfddffdsedfddffdsdsfddffdsfdfddffdsdffddffdsdefddffdsdxfddffdscdfddffdsdcfddffdsrdfddffdsdrfddffdsdfdddffdsdgfddffdsdfgddffdsdfrddffdsdfcddffdsdvfddffdsdfvddffdsdtfddffdsdftddffdsdfsddffdsdfdsdffdsdfdfdffdsdfeddffdsdfdedffdsdfxddffdsdfdxdffdsdfdcdffdsdfdr