C3123121111113313121111331333133313311211113313331333132322331323312321   >>    C312312111111331312111133133313331331121111331333133313232233132331232   <<    C3123121111113313121111331333133313311211113313331333132322331323312323   >>      C3123121111113313121111331333133313311211113313331333132322331323312322   >>