C111123313331323113313331333133313331323133112113313221211111323123131   >>    C11112331333132311331333133313331333132313311211331322121111132312313   <<    C111123313331323113313331333133313331323133112113313221211111323123133   >>      C111123313331323113313331333133313331323133112113313221211111323123132   >>