Kya Constitution ke Articles 14, 19 aur 21 ka relation hai ya nahi?

Main abhi Constitutional Law stud kar raha hoon, lekin article 14 wala fundamental principle ke bare mein kuch samjh mein nahin a raha hai. Kabhi toh yeh lagta hai isse article 19 se juda hai aur kabhi toh article 21 se juda hai. Meri pahal mein to iske liye 3 alag alag theories hain - Equality, Liberty, and Security of Life. Kya yeh theories ek dusre se judi hui hain ya nahi? Main to aap sabhi ke comment zaroor padhna chahta hoon. Mera man mein yeh bhi hai ki iske liye koi specific example ho jo meri samajh mein aaye.