The exact construction of a bear call spread involves buying an out - of - the - money call option and selling a higher strike price in - the - money call option of the same asset with same expiration date simultaneously. (adigitalblogger.com)
If coffee is trading at 84, we can buy 1 coffee 100 call and write 2 135 calls with the same expiration dates and 30 days of time until expiration. (cannontrading.com)
For a European butterfly spread simply buying 1 put with strike price X + a, 1 put with strike price X-a and shorting 2 calls with strike price X, all with the same expiration date, would give you a butterfly spread. (money.stackexchange.com)