C1111233131211111211113313331333133313331312331333133313123132322133321   >>    C111123313121111121111331333133313331333131233133313331312313232213332   <<    C1111233131211111211113313331333133313331312331333133313123132322133323   >>      C1111233131211111211113313331333133313331312331333133313123132322133322   >>