C11112331333132311331333132313331323133313132313221211111232321   >>    C1111233133313231133133313231333132313331313231322121111123232   <<    C11112331333132311331333132313331323133313132313221211111232323   >>      C11112331333132311331333132313331323133313132313221211111232322   >>