C1111233131211111211113313331333133313231121133132322331322123231   >>    C111123313121111121111331333133313331323112113313232233132212323   <<    C1111233131211111211113313331333133313231121133132322331322123233   >>      C1111233131211111211113313331333133313231121133132322331322123232   >>