C1111233131211111211113313331333133313331333133313331333132233131333133323221   >>    C111123313121111121111331333133313331333133313331333133313223313133313332322   <<    C1111233131211111211113313331333133313331333133313331333132233131333133323223   >>      C1111233131211111211113313331333133313331333133313331333132233131333133323222   >>