Standing waves on string

I am a high school student and I am a little confused about standing waves on string, My confusion is that: we know ,A standing wave is formed by the interference of reflected wave and incident wave but I am not able to imagine at what places will the constructive and destructive interference occurs at frequencies other than natural frequencies?{you can show it on string fixed at both ends}
like we know when we vibrate the string in its normal mode frequencies then at any moment in time the destructive interference will occur at the nodes, but how will these interferences look if we vibrate the string with any other frequency, I think destructive interference should also occurs at the nodes even in this case{by nodes i mean to say only fixed ends, I know it can be other points also, but i am taking about then to easily imagine the situation}