C11111211113313112113313331333133313331333132322121111331323133313331333233231   >>    C1111121111331311211331333133313331333133313232212111133132313331333133323323   <<    C11111211113313112113313331333133313331333132322121111331323133313331333233233   >>      C11111211113313112113313331333133313331333132322121111331323133313331333233232   >>