C11111211113313112113313331333132313331322121111133313331333133322231321   >>    C1111121111331311211331333133313231333132212111113331333133313332223132   <<    C11111211113313112113313331333132313331322121111133313331333133322231323   >>      C11111211113313112113313331333132313331322121111133313331333133322231322   >>