C11111211113313112113313331333133313331333131211113313331323223321311   >>    C1111121111331311211331333133313331333133313121111331333132322332131   <<    C11111211113313112113313331333133313331333131211113313331323223321313   >>      C11111211113313112113313331333133313331333131211113313331323223321312   >>