C1111233133313231133133313331333133311221123121111331322331322311   >>    C111123313331323113313331333133313331122112312111133132233132231   <<    C1111233133313231133133313331333133311221123121111331322331322313   >>      C1111233133313231133133313331333133311221123121111331322331322312   >>