C11111211113313112113313331333133313331333132212111133133313331333133323321221   >>    C1111121111331311211331333133313331333133313221211113313331333133313332332122   <<    C11111211113313112113313331333133313331333132212111133133313331333133323321223   >>      C11111211113313112113313331333133313331333132212111133133313331333133323321222   >>