1. 1.
    0
                
             ^
            ▲ ▲               ccc                                
          ▲
        ▲
      ▲ ▲ ▲

                                                                                    
    ···
  2. 2.
    0
                
              
            ▲ ▲               ccc                                
          ▲
        ▲
      ▲ ▲ ▲

                                                                                    
    ···
  3. 3.
    0
                
              
            ▲ ▲               ccc                                
          ▲
        ▲
      ▲ ▲ ▲

                                                                                    
    ···
  4. 4.
    0
                
              ı
            ▲ ▲               ccc                                
          ▲
        ▲
      ▲ ▲ ▲

                                                                                    
    ···
  5. 5.
    0
                
              _
            ▲ ▲               ccc                                
          ▲
        ▲
      ▲ ▲ ▲

                                                                                    
    ···
  6. 6.
    0
                
             ^
            ▲ ▲               ccc                                
          ▲
        ▲
      ▲ ▲ ▲

                                                                                    
    ···