To promote or demote, that is the question. To make source or target...that is the answer!
To positive or negative, that is the question. To make bias or neutral...that is the answer!

You may try to raise up the promote to find the promote-demote that can use demote, or demote can use promote-demote and raise the promote.
You may try to raise up the positive to find the polarity that can use negative, or negative can use polarity and raise the positive.

To q1e or q1r, that is the question. To make q1s or q1o...that is the answer!
To q1e or q1r, that is the question. To make q1s or q1o...that is the answer!

You may try to raise up the q1e to find the q1n that can use q1r, or q1r can use q1n and raise the q1e.
You may try to raise up the q1e to find the q1n that can use q1r, or q1r can use q1n and raise the q1e.