X naoh

X naohX naohX naohX naoh
X naohX naohX naohX naohX naohX naohX naohX naoh
X naohX naohX naohX naohX naohX naohX naohX naohX naohX naohX naohX naoh
X naohX naohX naohX naohX naohX naohX naohX naohX naohX naohX naohX naohX naohX naohX naohX naoh
X naohX naohX naohX naohX naohX naohX naohX naoh