C3132121111133313233121111331333133313331322331333132313113313231121   >>    C313212111113331323312111133133313331333132233133313231311331323112   <<    C3132121111133313233121111331333133313331322331333132313113313231123   >>      C3132121111133313233121111331333133313331322331333132313113313231122   >>