mridangam:
    0:4     1       2       3       X       O       X       O       |
0:  p ktktpk8n------npk u pk8n------k ktktpk8n------npk u pk8n------
  > o ktktpk8n------npk u pk8n------n ktktpk8n------npk u pk8n------
1:  p ktktpk8n------npk u oknouoktokk ktktpk8n------npk u oknouoktok
  > o ktktpk8n------npk u oknouoktokn ktktpk8n------npk u oknouoktok
    0:4     1       2       3       X       O       X       O       |
2:  p ktktpk8n------npktktoknokTkoTkk ktktpk8n------npktktoknokTkoTk
  > o ktktpk8n------npktktoknokTkoTkn ktktpk8n------npktktoknokTkoTk
3:  p ktktpk8n------N ktkoTknoktkoTkk ktktpk8n------N ktkoTknoktkoTk
  > o ktktpk8n------N ktkoTknoktkoTkn ktktpk8n------N ktkoTknoktkoTk