This last pairing represented the androgynous couple. Z is a perfect pairing over Z. Pairing mechanisms changed significantly with the introduction of Secure Simple Pairing in Bluetooth v2.1. A spectrum of pairing relationships is seen. Any particular pairing of meaning and form is a Saussurean sign. It's considered to be distinct from the Swiss pairing system. The process of pairing the homologous chromosomes is called synapsis. Prespawning courtship involves fin displays and male grunting, which leads to pairing. This process is similar to the electron pairing in superconductivity. This pairing defines a nondegenerate bilinear mapping called the natural pairing. Bhansali wanted to be the first director to showcase their pairing. Matchmakers acted busily in hopes of pairing couples. Collaros formed a quarterback pairing with Chris Streveler. This is a side effect of the pairing of similar patterns by the brain. Spawning is initiated by pairing up and courtship rituals.