C111123313331323113313331333133313331323133113313231333133313221211331311121   >>    C11112331333132311331333133313331333132313311331323133313331322121133131112   <<    C111123313331323113313331333133313331323133113313231333133313221211331311123   >>      C111123313331323113313331333133313331323133113313231333133313221211331311122   >>