2c42f43f_se_Versions___Creative_Commons__4_0
[1.0] If collection or adaptation, remove reference to author and licensor upon request to the extent practicable [2.0] If collection or adaptation, remove reference to author and licensor upon request to the extent practicable [3.0] If collection or adaptation, remove reference to author and licensor upon request to the extent practicable [4.0] 
Remove attribution information upon request to the extent reasonably practicable
License Versions - Creative Commons
4.0