C11111211113313112113313331333133313331333132313231333133112322121   >>    C1111121111331311211331333133313331333133313231323133313311232212   <<    C11111211113313112113313331333133313331333132313231333133112322123   >>      C11111211113313112113313331333133313331333132313231333133112322122   >>