C11111211113313112113313331333133313231121131211113313223313233231122333131   >>    C1111121111331311211331333133313331323112113121111331322331323323112233313   <<    C11111211113313112113313331333133313231121131211113313223313233231122333133   >>      C11111211113313112113313331333133313231121131211113313223313233231122333132   >>