C11111211113313112113313331333133313231323223113313231333132221   >>    C1111121111331311211331333133313331323132322311331323133313222   <<    C11111211113313112113313331333133313231323223113313231333132223   >>      C11111211113313112113313331333133313231323223113313231333132222   >>