C111113331333132322331333133313331323133313233213133313231333132112313111   >>    C11111333133313232233133313331333132313331323321313331323133313211231311   <<    C111113331333132322331333133313331323133313233213133313231333132112313113   >>      C111113331333132322331333133313331323133313233213133313231333132112313112   >>