C11111211113313112113313331333132313331323133313331323221213121   >>    C1111121111331311211331333133313231333132313331333132322121312   <<    C11111211113313112113313331333132313331323133313331323221213123   >>      C11111211113313112113313331333132313331323133313331323221213122   >>