C11223331333132322331333131133132313113313231133132313231313221   >>    C1122333133313232233133313113313231311331323113313231323131322   <<    C11223331333132322331333131133132313113313231133132313231313223   >>      C11223331333132322331333131133132313113313231133132313231313222   >>