C11111211113313112113313331333132313331323133313331323232131311   >>    C1111121111331311211331333133313231333132313331333132323213131   <<    C11111211113313112113313331333132313331323133313331323232131313   >>      C11111211113313112113313331333132313331323133313331323232131312   >>