C1111233133313231133133313331333133311221123121111331333133313331323223313221   >>    C111123313331323113313331333133313331122112312111133133313331333132322331322   <<    C1111233133313231133133313331333133311221123121111331333133313331323223313223   >>      C1111233133313231133133313331333133311221123121111331333133313331323223313222   >>