C111123313331323113313331333133313331323133112323133313233222311   >>    C11112331333132311331333133313331333132313311232313331323322231   <<    C111123313331323113313331333133313331323133112323133313233222313   >>      C111123313331323113313331333133313331323133112323133313233222312   >>