C11111211113313112113313331333133313331333132212111133133313331322121111132121   >>    C1111121111331311211331333133313331333133313221211113313331333132212111113212   <<    C11111211113313112113313331333133313331333132212111133133313331322121111132123   >>      C11111211113313112113313331333133313331333132212111133133313331322121111132122   >>