C111123313331323113313331333133313331323133112113313133313231311131321   >>    C11112331333132311331333133313331333132313311211331313331323131113132   <<    C111123313331323113313331333133313331323133112113313133313231311131323   >>      C111123313331323113313331333133313331323133112113313133313231311131322   >>