C1111233131211111211113313331333133313331333133313331333133313112112113323221   >>    C111123313121111121111331333133313331333133313331333133313331311211211332322   <<    C1111233131211111211113313331333133313331333133313331333133313112112113323223   >>      C1111233131211111211113313331333133313331333133313331333133313112112113323222   >>