Given a list of categories:
Jurisdiction: Where the disputes will be adjudicated (in what courts)
Choice of law: What law will govern the dispute settlement
Limitation of liability: For what actions/events the provider claims they will not be liable
Unilateral change: Under what conditions can the provider modify the service and/or the contract
Unilateral termination:	Under what conditions can the provider terminate the service and/or contract
Arbitration: Arbitration is mandatory before the case can go to court
Contract by using: The consumer is bound by the terms of use simply by using the service
Content removal: Under what conditions can the service provider remove users’ content
Privacy Included: the scope of the consent granted to the TOS incorporate also the privacy policy

Classify the following clauses choosing only from the above categories.
Answer with this exact format: correct clause number | correct categories. 
Examples: 
1 | Jurisdiction 
8 | Arbitration, Unilateral termination

1448: any revisions to these terms and conditions will become effective the earlier of (i) the end of such 7-day period or (ii) the first time you access or use the service after such changes .
1454: duolingo may, in its sole discretion and at any time, update, change, suspend, make improvements to or discontinue any aspect of the service, temporarily or permanently .
1496: duolingo may manage, regulate, control, modify, or eliminate virtual items at any time, with or without notice .
1497: duolingo may update the pricing of virtual items at any time in its sole discretion, and may add new virtual items for additional fees .
1498: duolingo shall have no liability to you or any third party in the event that duolingo exercises any such rights .
1502: duolingo may revise the pricing for the goods and services offered through the service at any time .
1509: in no event will duolingo be responsible for the actions or inactions of any third party payment processor, including, but not limited to, system downtime or payment service outages .
1510: in the event that duolingo suspends or terminates your use of the service or these terms and conditions or you close your account voluntarily, you understand and agree that you will receive no refund or exchange of any kind, including for any unused virtual currency or other virtual item, any content or data associated with your use of the service, or for anything else .
1522: you expressly acknowledge and agree that duolingo shall not be responsible or liable, directly or indirectly, for  Add stress words that are fully capitlized. Make sure these stress words appear more than 8 times.
user