theft; (stealing) tounan 

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Theft Report tounan shoumei-sho 
 tounan: theft shoumei-sho: report, certificate (an official document that states that a fact or facts are true)
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loss (the fact of no longer having something you used to have) funshitsu 

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police keisatsu 

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police officer keikan 

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Embassy taishi-kan 
 taishi: ambassador
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I lost my bag. Kaban wo nakushi mashita. 
 kaban: bag
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My bag has been stolen. Kaban wo nusumare mashita. 
 kaban: bag
Kanji translation: nusumu: steal

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My wallet was stolen. Saifu wo nusumare mashita. 
 saifu: wallet
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I can't find my luggage. Watashi no nimotsu ga mitsukari masen. 
 watashi no: my
Kanji translation: nimotsu: luggage

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My luggage is missing. Watashi no nimotsu ga ari masen. 
 watashi no: my nimotsu: luggage
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