C11111333133313232233133313331333133313231312111133131333133321123121   >>    C1111133313331323223313331333133313331323131211113313133313332112312   <<    C11111333133313232233133313331333133313231312111133131333133321123123   >>      C11111333133313232233133313331333133313231312111133131333133321123122   >>