C11111211113313112113313331333132313331322121111133313331333133311222121   >>    C1111121111331311211331333133313231333132212111113331333133313331122212   <<    C11111211113313112113313331333132313331322121111133313331333133311222123   >>      C11111211113313112113313331333132313331322121111133313331333133311222122   >>