C11111211113313112113313331333133313331333131211113313232223213131   >>    C1111121111331311211331333133313331333133313121111331323222321313   <<    C11111211113313112113313331333133313331333131211113313232223213133   >>      C11111211113313112113313331333133313331333131211113313232223213132   >>