C11111211113313112113313331333133313331333132322121111331323131111   >>    C1111121111331311211331333133313331333133313232212111133132313111   <<    C11111211113313112113313331333133313331333132322121111331323131113   >>      C11111211113313112113313331333133313331333132322121111331323131112   >>