Review X & .Typing PracticeCourseTouch Typing PracticeUnitBottom RowTargetStrengthen Below with the Bottom Row Contentxs.lx sl.s. lx.s xl sx. l. slx lsx.x s.lxl .s .sl x.s xl x.lsx ls.xs l.x. ls l.xsl sx .sx .ls lx .slx .sl x. sl .xs lx.ls x. sx .l Start Practice Prev: Learn X & . Next: Practice X & .