C111123313331323113313331333133313231333132231211331323133313112113222311   >>    C11112331333132311331333133313331323133313223121133132313331311211322231   <<    C111123313331323113313331333133313231333132231211331323133313112113222313   >>      C111123313331323113313331333133313231333132231211331323133313112113222312   >>