I got this photo along with an email from a young lady in Canada a few days ago. She said when she was 16 years old; she had her grandfather’s initials “SCK” to be tattooed in “Chinese lettering”.
Although the two lower characters 安 and 空 are recognizable, the first character is only a partial of 流 (flow). The three characters do not pronounce anywhere near “S”, “C”, “K”.