The camels for the wound exposing the bone: what are they?

Sayyiduna Ali (may Allah be pleased with him) said that for a wound to the head and face in which the bone becomes clearly exposed, five camels are to be given, divided into four parts: one quarter in their fifth year, one quarter in their fourth year, one quarter in their third year and one quarter in their second year.

Sayyiduna Abdullah (may Allah be pleased with him) said that for a wound to the head and face in which the bone becomes clearly exposed, five camels are to be given, divided into five parts.

Masruq and Shurayh said that for a wound to the head and face in which the bone becomes clearly exposed, five camels are to be given: one in its fourth year, one in its fifth year, a she-camel in its second year, one in its third year, and a male camel in its third year.

It is narrated from Ibrahim that for a tooth and for a wound in which the bone becomes exposed, there are five camels: two in their third year, a male and a female, a she-camel in its third year, one in its fifth year, and a she-camel in its fourth year.

It is narrated from al-Hasan regarding the blood money for a wound in which the bone becomes clearly exposed: a she-camel in its second year, a male camel in its third year, a she-camel in its third year, a she-camel in its fourth year and a she-camel in its fifth year.