C1111133313331323223313331333133313331333131211113313331323133313231333232211   >>    C111113331333132322331333133313331333133313121111331333132313331323133323221   <<    C1111133313331323223313331333133313331333131211113313331323133313231333232213   >>      C1111133313331323223313331333133313331333131211113313331323133313231333232212   >>