valuable it was to learned vs valuable it was to learnt

Some examples from the web:

• The Gilbert family has learned a valuable lesson - screw everything.
• Because a valuable lesson was learned that horrible day.
• At that moment, the Chosen One learned a valuable lesson about iron claws.
• That day, Olive Snook learned a valuable lesson.
• Today I learned a valuable lesson about friendship.
• I learned a valuable lesson about lying and decency that day.
• Valuable things can be learned, even in a place like this.
• Plus, I learned a valuable lesson - ignore feelings of guilt.
• And I learned a valuable lesson about the perils of gambling.
• Today I've learned a valuable lesson.
• But... I learned a valuable lesson that day.
• Jared and I have learned a valuable lesson through this ordeal.
• I think I really learned something valuable.
• At Greek school, I learned valuable lessons like:
• I've worked with a number of excellent sergeants during my time on the job, and I feel I've learned valuable leadership lessons from all of them, sir.
• I'm not sure what I'm watching here, but at least you learned a valuable lesson.
• Fears are all too real, and I think we learned a valuable lesson about that the last couple of days.
• Well, at least Barney learned a valuable lesson.
• Although I learned a valuable lesson that night.
• Well, I learned a valuable lesson about wanting more than I could afford.

Some examples from the web:

• I know how valuable it must be.
• I can't tell you how valuable it will be to observe them under these harsh, unforgiving and hard conditions.
• I told you, Nikita, I know all about how valuable it is to have the right friends.
• No matter how valuable it is or how much wealth it can bring you, it's never worth the consequences.
• The longer I keep it, the more valuable it gets.
• We greatly appreciate his presence here, but I should also like to mention how valuable it has been to have the Secretary of State, Mr Wohlfart, with us.
• Do you know, how valuable it is?
• It all depends on what you got to say, how valuable it is to the case.
• I can't tell you how valuable it will be to observe them under these harsh, unforgiving and hard conditions.
• Since mediation fees for valuables are often percentages of the worth of the valuables it is reasonable to think that both are correlated enough to constitute a B method.
• For example, if a put option or guarantee is sufficiently valuable it constrains the transferee from selling the transferred asset because the transferee would, in practice, not sell the transferred asset to a third party without attaching a similar option or other restrictive conditions.
• Turkey would have a pivotal role between the Black Sea and the Mediterranean and this would give it the chance to show just how important Turkey is in Europe and how valuable it is to the European Union.
• This is very important and I remember very well, when we discussed this kind of scheme for the first time, that we said we needed to evaluate and re-evaluate how valuable it is for the countries and for ourselves.
• Regular evaluation and lessons learnt exercises reviewing response to specific crises are valuable components in enhancing the effectiveness of humanitarian aid.
• Kemidov found out how valuable it was!