C11111211113313112113313331333133313331333132322121111121111331323132313223321   >>    C1111121111331311211331333133313331333133313232212111112111133132313231322332   <<    C11111211113313112113313331333133313331333132322121111121111331323132313223323   >>      C11111211113313112113313331333133313331333132322121111121111331323132313223322   >>