C1111233133313231133133313331333133313231121333133313331211111331233132322321   >>    C111123313331323113313331333133313331323112133313331333121111133123313232232   <<    C1111233133313231133133313331333133313231121333133313331211111331233132322323   >>      C1111233133313231133133313331333133313231121333133313331211111331233132322322   >>