N kb

N kbN kbN kbN kbN kbN kb
N kbN kbN kbN kbN kbN kb
N kbN kbN kbN kbN kbN kbN kbN kbN kbN kbN kbN kbN kbN kbN kbN kbN kbN kbN kbN kbN kbN kb