1. Man (People)
   1. Training: Insufficient training programs
   2. Experience: Lack of experience among staff
   3. Communication: Poor communication between teams
   4. Motivation: Low employee motivation
2. Machine (Equipment)
   1. Maintenance: Inadequate maintenance schedules
   2. Performance: Suboptimal machine performance
   3. Technology: Outdated machinery and technology
   4. Reliability: Frequent equipment breakdowns
3. Material
   1. Quality: Variability in raw material quality
   2. Supply: Unreliable material supply chains
   3. Handling: Poor material handling practices
   4. Inventory: Inefficient inventory management
4. Method
   1. Processes: Inefficient production processes
   2. Standard Operating Procedures (SOPs): Lack of SOPs
   3. Workflow: Poor workflow design
   4. Quality Control: Inadequate quality control measures
5. Measurement
   1. Data Accuracy: Inaccurate production data
   2. Monitoring: Insufficient monitoring systems
   3. Calibration: Lack of regular calibration
   4. KPIs: Ineffective key performance indicators (KPIs)
6. Mother Nature (Environment)
   1. Conditions: Unfavorable working conditions
   2. External Factors: Impact of environmental factors
   3. Lighting: Poor lighting conditions
   4. Noise: High levels of noise pollution