C11111211113313112113313331333133313331333132322121111331323133313331323113211   >>    C1111121111331311211331333133313331333133313232212111133132313331333132311321   <<    C11111211113313112113313331333133313331333132322121111331323133313331323113213   >>      C11111211113313112113313331333133313331333132322121111331323133313331323113212   >>