C111123313331323113313331333133313331323133321133132322331312331   >>    C11112331333132311331333133313331333132313332113313232233131233   <<    C111123313331323113313331333133313331323133321133132322331312333   >>      C111123313331323113313331333133313331323133321133132322331312332   >>