C11112331333132311331333132313331333133313233121111331333132313223232133112321   >>    C1111233133313231133133313231333133313331323312111133133313231322323213311232   <<    C11112331333132311331333132313331333133313233121111331333132313223232133112323   >>      C11112331333132311331333132313331333133313233121111331333132313223232133112322   >>