C11111211113313112113313331333133313331333132313331333133313331323133322132221   >>    C1111121111331311211331333133313331333133313231333133313331333132313332213222   <<    C11111211113313112113313331333133313331333132313331333133313331323133322132223   >>      C11111211113313112113313331333133313331333132313331333133313331323133322132222   >>