The word "Sustren" is a unique spelling of the word "Sisteren." It is pronounced "suh-struhn" [sʌstrən]. The use of the letter "u" instead of "i" in "Sustren" is likely an intentional alteration to give the word a distinct or memorable spelling. When reading this word aloud, it is important to note that the "u" is pronounced as "uh" rather than "oo." Despite its different spelling, "Sustren" still refers to sisters or a group of women who share a bond.