From hello to yellow

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For strings s=hello s = \textrm{hello} and t=yellow t = \textrm{yellow} calculate dE(s,t) d_E(s, t) and reconstruct edit operations. Your output is expected to be in the format of an alignment. For example, it may look like this:

b-one
brown

If there are several possible alignments, print any of them.

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