D21221323131123313131333132233131133131323223313232212121111331323232331   >>    D2122132313112331313133313223313113313132322331323221212111133132323233   <<    D21221323131123313131333132233131133131323223313232212121111331323232333   >>      D21221323131123313131333132233131133131323223313232212121111331323232332   >>