Could the adverb part be done this way? If so, the verb part could be changed, too.
2 3 5 +(1 : '[ by ] over [ u/ ]') 0 1 2 3
+-+-------+
| |0 1 2 3|
+-+-------+
|2|2 3 4 5|
|3|3 4 5 6|
|5|5 6 7 8|
+-+-------+
n
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