C1111233131211111211113313331333133313232321333133313331333131133133322132321   >>    C111123313121111121111331333133313331323232133313331333133313113313332213232   <<    C1111233131211111211113313331333133313232321333133313331333131133133322132323   >>      C1111233131211111211113313331333133313232321333133313331333131133133322132322   >>