C11111211113313112113313331333132313331322121111133313331333133311233132313221   >>    C1111121111331311211331333133313231333132212111113331333133313331123313231322   <<    C11111211113313112113313331333132313331322121111133313331333133311233132313223   >>      C11111211113313112113313331333132313331322121111133313331333133311233132313222   >>