bbbbbbbb                                                                      
FFFFFFFFFFFFFFFFFFFFFF                                            tttt         b::::::b                                     tttt               tttt          
F::::::::::::::::::::F                                         ttt:::t         b::::::b                                  ttt:::t            ttt:::t          
F::::::::::::::::::::F                                         t:::::t         b::::::b                                  t:::::t            t:::::t          
FF::::::FFFFFFFFF::::F                                         t:::::t          b:::::b                                  t:::::t            t:::::t          
  F:::::F       FFFFFFaaaaaaaaaaaaa  rrrrr   rrrrrrrrr   ttttttt:::::ttttttt    b:::::bbbbbbbbb    uuuuuu    uuuuuuttttttt:::::tttttttttttttt:::::ttttttt    
  F:::::F             a::::::::::::a r::::rrr:::::::::r  t:::::::::::::::::t    b::::::::::::::bb  u::::u    u::::ut:::::::::::::::::tt:::::::::::::::::t    
  F::::::FFFFFFFFFF   aaaaaaaaa:::::ar:::::::::::::::::r t:::::::::::::::::t    b::::::::::::::::b u::::u    u::::ut:::::::::::::::::tt:::::::::::::::::t    
  F:::::::::::::::F            a::::arr::::::rrrrr::::::rtttttt:::::::tttttt    b:::::bbbbb:::::::bu::::u    u::::utttttt:::::::tttttttttttt:::::::tttttt    
  F:::::::::::::::F     aaaaaaa:::::a r:::::r     r:::::r      t:::::t          b:::::b    b::::::bu::::u    u::::u      t:::::t            t:::::t          
  F::::::FFFFFFFFFF   aa::::::::::::a r:::::r     rrrrrrr      t:::::t          b:::::b     b:::::bu::::u    u::::u      t:::::t            t:::::t          
  F:::::F            a::::aaaa::::::a r:::::r                  t:::::t          b:::::b     b:::::bu::::u    u::::u      t:::::t            t:::::t          
  F:::::F           a::::a    a:::::a r:::::r                  t:::::t    ttttttb:::::b     b:::::bu:::::uuuu:::::u      t:::::t    tttttt  t:::::t    tttttt
FF:::::::FF         a::::a    a:::::a r:::::r                  t::::::tttt:::::tb:::::bbbbbb::::::bu:::::::::::::::uu    t::::::tttt:::::t  t::::::tttt:::::t
F::::::::FF         a:::::aaaa::::::a r:::::r                  tt::::::::::::::tb::::::::::::::::b  u:::::::::::::::u    tt::::::::::::::t  tt::::::::::::::t
F::::::::FF          a::::::::::aa:::ar:::::r                    tt:::::::::::ttb:::::::::::::::b    uu::::::::uu:::u      tt:::::::::::tt    tt:::::::::::tt
FFFFFFFFFFF           aaaaaaaaaa  aaaarrrrrrr                      ttttttttttt  bbbbbbbbbbbbbbbb       uuuuuuuu  uuuu        ttttttttttt        ttttttttttt