Answer: I think it is a variegated form of Liriope, probably Liriope muscari 'Variegata'. I should mention that this plant is usually considered hardy into zone 6, but your zip code 46052 places you in zone 5A, the coldest part of zone 5. Depending on your microclimate, it is possibly as cold as zone 4. You might check with your local county extension and local professional nursery staff and see if they think it will survive your winters or not -- that is substantially colder than I would expect Liriope to do well.
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