C312322331333132212111133133313331333131133113313331333131211111232322123131   >>    C31232233133313221211113313331333133313113311331333133313121111123232212313   <<    C312322331333132212111133133313331333131133113313331333131211111232322123133   >>      C312322331333132212111133133313331333131133113313331333131211111232322123132   >>