John,owner of a most exclusive nightclub was shot and killed ba a gang,after considerable effort on the part of the police,five men were arrested as suspects and were asked to say for themselves what they know of d case. Each man made three statements,two of the statements are true and one of d statements is false. Lefty man: statement 1- i did not kill John. Statement 2- i never owned a gun. Satement 3- Spaco did it. Red man: statement 1- i did not kill john. Statement 2- i never owned a gun. Statement 3- d other guys are all passing d back. Don man: statement 1- i am innocent. Statement 2- i never saw boss before. Staement 3- Spaco is innocent. Spaco man: statement 1- i am innocent. Statement 2- boss is the guilty man. Statement 3- lefty man lied wen he said i did it. Boss man: statement 1- i did not kill john. Staement 2- red is d guilty man. Statement 3- don and i are old friends. Therefore,who killed John amoung these men

To determine who killed John among these suspects, we need to analyze their statements and find contradictions or inconsistencies. Let's break down each suspect's statements and evaluate them:

Lefty Man:
- Statement 1: "I did not kill John." (Could be true or false)
- Statement 2: "I never owned a gun." (Could be true or false)
- Statement 3: "Spaco did it." (Could be true or false)

Red Man:
- Statement 1: "I did not kill John." (Could be true or false)
- Statement 2: "I never owned a gun." (Could be true or false)
- Statement 3: "The other guys are all passing the buck." (Could be true or false)

Don Man:
- Statement 1: "I am innocent." (Could be true or false)
- Statement 2: "I never saw the boss before." (Could be true or false)
- Statement 3: "Spaco is innocent." (Could be true or false)

Spaco Man:
- Statement 1: "I am innocent." (Could be true or false)
- Statement 2: "The boss is the guilty man." (Could be true or false)
- Statement 3: "Lefty man lied when he said I did it." (Could be true or false)

Boss Man:
- Statement 1: "I did not kill John." (Could be true or false)
- Statement 2: "Red is the guilty man." (Could be true or false)
- Statement 3: "Don and I are old friends." (Could be true or false)

Now, let's cross-reference their statements to find inconsistencies or contradictions:

- Lefty and Red both claim they did not kill John and never owned a gun. This does not give us much information since one of their statements has to be false.

- Don claims innocence and states he never saw the boss before. This does not reveal new information.

- Spaco accuses the boss and says that Lefty lied about him being the killer.

- Boss denies killing John and accuses Red of being the guilty man.

Based on the information provided, it seems that Red and the Boss are accusing each other, while Spaco is accusing Lefty. Don does not provide any substantial information.

To move forward, we need additional information or evidence to determine who killed John among these men. The contradictions and accusations presented in their statements alone are not sufficient for a conclusive answer.