lllllll                                                              
                      l:::::l                                                              
                      l:::::l                                                              
                      l:::::l                                                              
 rrrrr   rrrrrrrrr     l::::l      cccccccccccccccc uuuuuu    uuuuuu   rrrrr   rrrrrrrrr   
 r::::rrr:::::::::r    l::::l    cc:::::::::::::::c u::::u    u::::u   r::::rrr:::::::::r  
 r:::::::::::::::::r   l::::l   c:::::::::::::::::c u::::u    u::::u   r:::::::::::::::::r 
 rr::::::rrrrr::::::r  l::::l  c:::::::cccccc:::::c u::::u    u::::u   rr::::::rrrrr::::::r
  r:::::r     r:::::r  l::::l  c::::::c     ccccccc u::::u    u::::u    r:::::r     r:::::r
  r:::::r     rrrrrrr  l::::l  c:::::c              u::::u    u::::u    r:::::r     rrrrrrr
  r:::::r              l::::l  c:::::c              u::::u    u::::u    r:::::r            
  r:::::r              l::::l  c::::::c     ccccccc u:::::uuuu:::::u    r:::::r            
  r:::::r             l::::::l c:::::::cccccc:::::c u:::::::::::::::uu  r:::::r            
  r:::::r             l::::::l  c:::::::::::::::::c  u:::::::::::::::u  r:::::r            
  r:::::r             l::::::l   cc:::::::::::::::c   uu::::::::uu:::u  r:::::r            
  rrrrrrr             llllllll     cccccccccccccccc     uuuuuuuu  uuuu  rrrrrrr