the blacks and yellow got bad as expected at first because they were choked this is to see the effect on the cyan and magenta. the test shows that the magenta has some serious clogs. the cyan and black will eventually likely come back. the issue is you will need some luck on the magenta. remember doing all these things don't guarantee freeing up dried clogs on the magenta. restore the plugs as normal and keep repeating and maybe the magenta will break out. if the clog is deep inside the piezo head where the external liquid can't reach then there is not much that can be done. the cyan looks like air. similar for the black that is coming back. the magenta is always consistent.